2026

• Westendorp, Josien; Jalloh, Rugiatu; Sheriff, Sarrah; Wussow, Jenny; Stamland, Guro; Bjorøy, Sigrid Anne; Moses, Francis; Rijken, Marcus J.; Hoffmann-Lonnee, Risa; Bolkan, Håkon Angell. (2026) A cross-sectional study of caesarean deliveries performed by medical doctors and associate clinicians in nine district and regional hospitals in Sierra Leone using the Robson Ten Group Classification System. International Journal of Gynecology & Obstetrics
  Vitenskapelig artikkel
• Wussow, Jenny; Fedorova, Tatyana D.; Conteh, Moses Ibrahim; Starling, Sebastian; Roemers, Rosa; Bah, Amadu Wurie; Kalokoh, Ishmael Abu; Sheriff, Haja Sarrah; Dumbuya, Abubakarr; Sankoh, Zainab Matilda. (2026) Characteristics and Determinants for Home Births in Rural Sierra Leone: A Cross-Sectional Study. Maternal and Child Health Journal
  Vitenskapelig artikkel
• Mona, Johanna; Ahlbäck, Johan G.; Lebbie, Aiah; Ashley, Thomas; Bolkan, Håkon Angell; van Duinen, Aalke Johan. (2026) Challenges and enablers in accessing paediatric inguinal hernia surgical care in Sierra Leone: a qualitative exploratory study. BMJ Open
  Vitenskapelig artikkel
• Øvreås, Elisabeth; Vreede, Eric; van Duinen, Alex J; Svengaard, Maria; Furre, Mali Eggen; Kamara, Augustine Kamanda; Sesay, Denis Akar; Lonnee, Herman; Nathani, Priyansh; Kabba, Mustapha S. (2026) Anaesthesia workforce distribution, practices and essential resources in Sierra Leone: a nationwide, cross-sectional, facility-based study. BMJ Open
  Vitenskapelig artikkel
• Faradonbeh, Sara Aakre; Halvorsen, Anniken Høeg; Ashley, Thomas; Lebbie, Aiah; Kabba, Mustapha S; Andersen, Lena; Bolkan, Håkon Angell; van Duinen, Alex J. (2026) Development of paediatric surgical care in Sierra Leone: a repeated nationwide cross-sectional study from 2012 to 2023. BMJ Public Health
  Vitenskapelig artikkel

2025

• Martens, Janine P. J.; Leerdam, Daniel van; Kanneh, Sayoh; Smalle, Isaac O.; Sankoh, Osman; van Duinen, Alex J.; Bolkan, Håkon Angell. (2025) Surgical Volume in Sierra Leone: A Comparison Between Population and Facility‐Based Data Collection. World Journal of Surgery
  Vitenskapelig artikkel
• Ashley, Thomas; Ashley, Hannah F; Wladis, Andreas; Nordin, Pär; Ohene-Yeboah, Michael; Smalle, Isaac O; Beard, Jessica H; Löfgren, Jenny; Bolkan, Håkon Angell; van Duinen, Alex J. (2025) Outcomes after elective inguinal hernia repair with mesh performed by associate clinicians versus medical doctors in Sierra Leone: 5-year follow-up of a randomized clinical trial. British Journal of Surgery
  Vitenskapelig artikkel
• Bakker, Juul Marlies; van Duinen, Aalke Johan; Patil, Priti; Nathani, Priyansh; Gyedu, Adam; Adde, Håvard Askim; Bhushan, Pranav; Roy, Nobhojit; Gadgil, Anita; Bolkan, Håkon Angell. (2025) Exploring the concept of surgical transition: surgical activity in the light of economic development in Sierra Leone, Liberia, Ghana and India. Frontiers in Surgery
  Vitenskapelig artikkel
• Nunes, Jonathan H. Vas; van Duinen, Aalke Johan; Boateng, Daniel; Tommy, Amidu J; Sankoh, Osman; Grobusch, Martin P.; Bolkan, Håkon Angell. (2025) Incidence and prevalence of traumatic and non-traumatic wounds and burns and access to wound care in Sierra Leone; data from a nationwide household survey (PRESSCO) 2020. Heliyon
  Vitenskapelig artikkel
• Furre, Mali Eggen; Svengaard, Maria; Øvreås, Elisabeth; van Duinen, Aalke Johan; Ashley, Thomas; Grobusch, Martin P.; Bakker, Juul Marlies; Gunneweg, Jaap; Roy, Nobhojit; Kabba, Mustapha S.. (2025) The impact of surgical task-sharing in Sierra Leone: a nationwide longitudinal observational study on surgical workforce and volume, 2012–2023. BMJ Global Health
  Vitenskapelig artikkel
• Nunes, Jonathan Vas; Wassill, Lars; Mönnink, Giulia; Falama, Abdul-Mac; Mathéron, Hanna; Conteh, Amara; Sesay, Maxwell; Sesay, Aminata; Bolkan, Håkon Angell; Grobusch, Martin P.. (2025) Suspected Buruli ulcer cases in Tonkolili District, Sierra Leone– a prospective cohort study. Infection
  Vitenskapelig artikkel
• Dawkins, Bryony; Shinkins, Bethany; Ensor, Tim; Jayne, David; Ashley, Thomas; van Duinen, Aalke Johan; Bolkan, Håkon Angell; Meads, David. (2025) Evaluating Access Improving Interventions: An Economic Evaluation of Surgical Task-Shifting for C-Sections in Sierra Leone. Applied Health Economics and Health Policy
  Vitenskapelig artikkel
• Kesteren, Jurre Van; Langeveld, Mirte; Ashley, Thomas; Fofanah, Tairu; Bonjer, Hendrik Jaap; Bolkan, Håkon Angell. (2025) Surgical task-sharing in Sierra Leone: barriers and enablers from provider and facilitator perspectives. BMJ Global Health
  Vitenskapelig artikkel

2024

• Besnier, Elodie Anne Suzanne; Infanti, Jennifer Jean; Bolkan, Håkon Angell; Dvergsdal, Elin Yli. (2024) Global Health Annual Report Jan. 2023- Jun. 2024. NTNU Faculty of Medicine and Health Sciences
  Annen rapport
• Werz, Markus Jan; van Duinen, Aalke Johan; Hampaye, Theophilus C.; Broek, Ankie van den; Bolkan, Håkon Angell. (2024) Exploring barriers and enabling factors for surgical task sharing with physician assistants in Liberia: a qualitative pre-implementation study. BMJ Open
  Vitenskapelig artikkel
• Lwin, Zin Min Thet; Mansaray, Abdul Rahman; Al-Samman, Sam; Keel, George; Forsberg, Birger C.; Beard, Jessica H.; van Duinen, Aalke Johan; Bolkan, Håkon Angell; Ashley, Thomas; Palmu, Juuli. (2024) Economic evaluation of expanding inguinal hernia repair among adult males in Sierra Leone. PLOS Global Public Health
  Vitenskapelig artikkel
• Logstein, Erika; Torp, Richard Hald; Ashley, Thomas; Kamara, Michael M.; Koroma, Alimamy P.; Dumbuya, Abu Bakarr; Suma, Musa S.; Moijue, Abdul Rahman; Westendorp, Josien; Kujabi, Monica L.. (2024) Long-term maternal outcomes 5 years after cesarean section in Sierra Leone: A prospective cohort study. International Journal of Gynecology & Obstetrics
  Vitenskapelig artikkel
• Adde, Håvard Askim; Oghogho, Mark Deenize; van Duinen, Aalke Johan; Grimes, Caris E; Hampaye, Theophilus C; Quaife, Matthew; Bolkan, Håkon Angell. (2024) The economic burden associated with unmet surgical needs in Liberia: A retrospective macroeconomic analysis based on a nationwide enumeration of surgical procedures. BMJ Open
  Vitenskapelig artikkel
• Stone, Hana; Bailey, Emma; Wurie, Haja; Leather, Andrew J M; Davies, Justine I.; Bolkan, Håkon Angell; Sevalie, Stephen; Youkee, Daniel; Parmar, Divya. (2024) A qualitative study examining the health system's response to COVID-19 in Sierra Leone. PLOS ONE
  Vitenskapelig artikkel

2023

• Ashley, Thomas; Ashley, Hannah F.; Wladis, Andreas; Nordin, Pär; Ohene-Yeboah, Michael; Rukas, Rimantas; Lipnickas, Vytautas; Smalle, Isaac O.; Holm, Kristina; Kalsi, Herta. (2023) Standardised Competency-Based Training of Medical Doctors and Associate Clinicians in Inguinal Repair with Mesh in Sierra Leone. World Journal of Surgery
  Vitenskapelig artikkel
• Wangen, Endre; Gillund, Even Westgaard; Reinholdtsen, Eirik Midtgaard; Henriksveen, Kristian Jostad; van Duinen, Aalke Johan; Faqiri, Mirwais; Ystgaard, Brynjulf; Bolkan, Håkon Angell. (2023) Akutte laparotomier ved St. Olavs hospital. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Vitenskapelig artikkel
• Lindenbergh, Karel C.; van Duinen, Aalke Johan; Ahlback, Johan Gottfrid; Kamoh, Joseph; Bah, Silleh; Ashley, Thomas; Löfgren, Jenny; Grobusch, Martin P.; Sankoh, Osman; Bolkan, Håkon Angell. (2023) Prevalence, incidence, repair rate, and morbidity of groin hernias in Sierra Leone: cross-sectional household study. BJS Open
  Vitenskapelig artikkel
• Kesteren, Jurre van; Goudoever, Leandra A.E. van; Conteh, Amara; Acker, Gijs J.D. van; Bonjer, H. Jaap; Bolkan, Håkon Angell. (2023) Technical Perspective for Video Based Assessment of Surgeries in Low-Resource Settings. Journal of Surgical Education
  Vitenskapelig artikkel

2022

• Kesteren, Jurre van; van Duinen, Aalke Johan; Marah, Foday; Delft, Diede van; Spector, Antoinette L.; Cassidy, Laura D.; Groen, Reinou S.; Jabbi, Sonnia-Magba Bu-Buakei; Bah, Silleh; Medo, James A.. (2022) PREvalence Study on Surgical COnditions (PRESSCO) 2020: A Population-Based Cross-Sectional Countrywide Survey on Surgical Conditions in Post-Ebola Outbreak Sierra Leone. World Journal of Surgery
  Vitenskapelig artikkel
• Kesteren, Jurre van; Meylahn-Jansen, Pauline J.; Conteh, Amara; Lissenberg-Witte, Birgit I.; van Duinen, Aalke Johan; Ashley, Thomas; Bonjer, H. Jaap; Bolkan, Håkon Angell. (2022) Inguinal hernia surgery learning curves by associate clinicians. Surgical Endoscopy
  Vitenskapelig artikkel
• Bolkan, Håkon Angell. (2022) Global kirurgi. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Vitenskapelig artikkel
• Bakke, Eirik; Øseth, Eirik; Fofanah, Tairu; Sesay, Ibrahim; van Duinen, Aalke Johan; Bolkan, Håkon Angell; Westendorp, Josien; Lonnee-Hoffmann, Risa. (2022) Vacuum births and barriers to its use: An observational study in governmental hospitals in Sierra Leone. BMJ Open
  Vitenskapelig artikkel
• Adde, Håvard Askim; van Duinen, Aalke Johan; Andrews, Benetta; Bakker, Juul Marlies; Goyah, Kezelebah; Salvesen, Øyvind Olav; Sheriff, Swaliho; Utam, Terseer; Yaskey, Clarence; Weiser, Thomas G.. (2022) Mapping population access to essential surgical care in Liberia using equipment, personnel, and bellwether capability standards. British Journal of Surgery
  Vitenskapelig artikkel

2021

• Sevalie, Stephen; Youkee, Daniel; van Duinen, Aalke Johan; Bailey, Emma; Bangura, Thaimu; Mangipudi, Sowmya; Mansaray, Esther; Odland, Maria Lisa; Parmar, Divya; Samura, Sorie. (2021) The impact of the COVID-19 pandemic on hospital utilisation in Sierra Leone. BMJ Global Health
  Vitenskapelig artikkel
• Sung, Sophia; Hørthe, Hilde; Svendsen, Øyvind Veel; van Duinen, Aalke Johan; Salvesen, Øyvind; Vandi, Alphonsus; Bolkan, Håkon Angell. (2021) Early evaluation of the transition from an analog to an electronic surgical logbook system in Sierra Leone. BMC Medical Education
  Vitenskapelig artikkel
• Bolkan, Håkon Angell. (2021) AKUTTKIRURGI – HVOR GÅR VEIEN VIDERE?. Kirurgen
  Leder
• Bolkan, Håkon Angell; Ystgaard, Brynjulf. (2021) Organisering av akutt kirurgi i USA, UK og Australia: kan vi lære noe?. Kirurgen
  Fagartikkel
• Adde, Håvard Askim; Duinen, Aalke Johan van; Sherman, L.M.; Andrews, B.C.; Salvesen, Øyvind; Dunbar, N.K.; Bleah, A.J.; Weiser, T.G.; Bolkan, Håkon Angell. (2021) A Nationwide Enumeration of the Surgical Workforce, its Production and Disparities in Operative Productivity in Liberia. World Journal of Surgery
  Vitenskapelig artikkel
• Bolkan, Håkon Angell. (2021) Akutt kirurgi - et globalt perspektiv. Kirurgen
  Fagartikkel
• Ahlback, Johan Gottfried; van Duinen, Aalke Johan; Brudal, Frank; Endreseth, Birger Henning; Bolkan, Håkon Angell. (2021) Effekt av Covid-19 pandemien på innleggelser og behandling av akuttkirurgisk pasienter i Midt-Norge. Kirurgen
  Fagartikkel
• Geraedts, Tessa J. M.; Boateng, Daniel; Lindenbergh, Karel C.; Delft, Diede Van; Mathéron, Hanna M.; Mönnink, Gulia L. E.; Martens, Janine P. J.; Leerdam, Daniel van; Nunes, Jonathan H. Vas; Jabbi, Sonnia-Magba Bu-Buakei. (2021) Evaluating the cascade of care for hypertension in Sierra Leone. Tropical medicine & international health
  Vitenskapelig artikkel
• Please, Helen R.; Nunes, Jonathan H. Vas; Patel, Rashida; Pluschke, Gerd; Tholley, Mohamed; Ruf, Marie-Therésè; Bolton, William; Scott, Julian A.; Grobusch, Martin P.; Bolkan, Håkon A.. (2021) Chronic wounds in sierra leone: Searching for buruli ulcer, a ntd caused by mycobacterium ulcerans, at masanga hospital. PLoS Neglected Tropical Diseases
  Vitenskapelig artikkel
• Gjøra, Andreas; Lindheim-Minde, Barbro; Bakker, Juul Marlies; van Duinen, Aalke Johan; Leerdam, Daniel van; Smalle, Isaac O; Bundu, Ibrahim; Bolkan, Håkon Angell. (2021) Changes in surgical volume, workforce, and productivity in Sierra Leone between 2012 and 2017. Surgery
  Vitenskapelig artikkel
• van Duinen, Aalke Johan; Westendorp, Josien; Ashley, Thomas; Hagander, Lars; Holmer, Hampus; Koroma, Alimamy P.; Leather, Andy J.M.; Shrime, Mark G.; Wibe, Arne; Bolkan, Håkon Angell. (2021) Catastrophic expenditure and impoverishment after caesarean section in Sierra Leone: An evaluation of the free health care initiative. PLOS ONE
  Vitenskapelig artikkel
• Ashley, Thomas; Ashley, Hannah; Wladis, Andreas; Bolkan, Håkon Angell; van Duinen, Aalke Johan; Beard, Jessica; Kalsi, Hertta; Palmu, Juuli; Nordin, Pär; Kristina, Holm. (2021) Outcomes After Elective Inguinal Hernia Repair Performed by Associate Clinicians vs Medical Doctors in Sierra Leone: A Randomized Clinical Trial. JAMA Network Open
  Vitenskapelig artikkel
• Bolkan, Håkon Angell; van Duinen, Aalke Johan. (2021) CapaCare 10 years, 2011 – 2021. CapaCare International
  Populærvitenskapelig monografi
• Bakker, Juul Marlies; van Duinen, Aalke Johan; Nolet, Wouter W.E.; Mboma, Peter; Sam, Tamba; Broek, Ankie van den; Flinkenflögel, Maaike; Gjøra, Andreas; Lindheim-Minde, Barbro; Kamanda, Samuel. (2021) Barriers to increase surgical productivity in Sierra Leone: A qualitative study. BMJ Open
  Vitenskapelig artikkel

2020

• Wehrens, Erik; Bangura, JS; Falama, AM; Kamara, Kelfala BB; Dubbink, Jan Henk; Bolkan, Håkon Angell; Grobusch, Martin P.. (2020) Primum non nocere: Potential indirect adverse effects of COVID-19 containment strategies in the African region. Travel Medicine and Infectious Disease
  Vitenskapelig artikkel
• Bolkan, Håkon Angell; Bowel, NASBO Collaborators National Audit of Small. (2020) Outcomes of obstructed abdominal wall hernia: results from the UK national small bowel obstruction audit. BJS Open
  Vitenskapelig artikkel
• van Duinen, Aalke Johan; Westendorp, Josien; Kamara, Michael M; Forna, Fatu; Hagander, Lars; Rijken, Marcus J.; Leather, Andy J.M.; Wibe, Arne; Bolkan, Håkon Angell. (2020) Perinatal outcomes of cesarean deliveries in Sierra Leone: A prospective multicenter observational study. International Journal of Gynecology & Obstetrics
  Vitenskapelig artikkel
• Duinen, Aalke Johan van; Adde, Håvard Askim; Fredin, Hans Ola; Holmer, Hampus; Hagander, Lars; Koroma, Alimamy Philip; Koroma, Michael M.; Leather, Andy; Wibe, Arne; Bolkan, Håkon Angell. (2020) Travel time and perinatal mortality after emergency caesarean sections: an evaluation of the 2-hour proximity indicator in Sierra Leone. BMJ Global Health
  Vitenskapelig artikkel
• Adde, Håvard Askim; van Duinen, Aalke Johan; Oghogho, Mark Deenize; Dunbar, Nelson; Tehmeh, Lekilay; Hampaye, Theophilus; Salvesen, Øyvind; Weiser, Thomas G.; Bolkan, Håkon Angell. (2020) Impact of surgical infrastructure and personnel on volume and availability of essential surgical procedures in Liberia. BJS Open
  Vitenskapelig artikkel

2019

• NASBO, NASBO Collaborators; Bolkan, Håkon Angell. (2019) National prospective cohort study of the burden of acute small bowel obstruction. BJS Open
  Vitenskapelig artikkel
• Drevin, Gustaf; Alvesson, Helle Mölsted; van Duinen, Aalke Johan; Bolkan, Håkon Angell; Koroma, Alimamy philip; Schreeb, Johan von. (2019) ”For this one, let me take the risk”: why surgical staff continued to perform caesarean sections during the 2014–2016 Ebola epidemic in Sierra Leone. BMJ Global Health
  Vitenskapelig artikkel
• van Duinen, Aalke Johan; Kamara, Michael M.; Hagander, Lars; Ashley, Thomas; Koroma, Alimamy Philip; Leather, Andy J.M.; Elhassein, Mohammed; Darj, Elisabeth; Salvesen, Øyvind; Wibe, Arne. (2019) Caesarean section performed by medical doctors and associate clinicians in Sierra Leone. British Journal of Surgery
  Vitenskapelig artikkel
• Drake, Thomas M.; Lee, Matthew; Sayers, Adele; Abercrombie, John F.; Aucheson, Austin; Alderson, Derek A.; Anderson, Iain; Bradburn, Mike; Davies, Michael; Hamady, Zaed. (2019) Outcomes following small bowel obstruction due to malignancy in the national audit of small bowel obstruction. European Journal of Surgical Oncology
  Vitenskapelig artikkel
• Svendsen, Øyvind Veel; Helgerud, Christoffer; van Duinen, Aalke Johan; Salvesen, Øyvind; George, Peter M.; Bolkan, Håkon Angell. (2019) Evaluation of a surgical task sharing training programme's logbook system in Sierra Leone. BMC Medical Education
  Vitenskapelig artikkel
• Holmer, Hampus; Kamara, Michael M.; Bolkan, Håkon Angell; van Duinen, Aalke Johan; Conteh, Sulaiman; Forna, Fatu; Hailu, Binyam; Hansson, Stefan R.; Koroma, Alimamy Philip; Koroma, Michael M.. (2019) The rate and perioperative mortality of caesarean section in Sierra Leone. BMJ Global Health
  Vitenskapelig artikkel
• Lee, Matthew; Sayers, Adele; Drake, Thomas M.; Singh, Pritam; Bradburn, Mike; Wilson, Timothy J; Murugananthan, Aravinth; Walsh, Ciaran J.; Fearnhead, Nicola S.; Bolkan, Håkon Angell. (2019) Malnutrition, nutritional interventions and clinical outcomes of patients with acute small bowel obstruction: results from a national, multicentre, prospective audit. BMJ Open
  Vitenskapelig artikkel
• Burgos, Carmen Mesas; Bolkan, Håkon Angell; Bash-Taqi, Donald Alpha; Hagander, Lars; Schreeb, Johan. (2019) Correction to: The Met Needs for Pediatric Surgical Conditions in Sierra Leone: Estimating the Gap. World Journal of Surgery
  Korrigendum

2018

• Liu, Ben; Hunt, Lesley; Lonsdale, Robert J; Narula, Harjeet; Manasrey, Alieu; Bundu, Ibrahim; Bolkan, Håkon Angell. (2018) Comparison of surgical skill acquisition by UK surgical trainees and Sierra Leonean associate clinicians in a task-sharing programme. BJS Open
  Vitenskapelig artikkel
• Treacy, Laura; Bolkan, Håkon Angell; Sagbakken, Mette. (2018) Distance, accessibility and costs. Decision-making During Childbirth in Rural Sierra Leone: a Qualitative Study. PLOS ONE
  Vitenskapelig artikkel
• Waalewijn, Bart; van Duinen, Aalke Johan; Koroma, Alimamy Philip; Rijken, Markus J.; Elhassein, Mohammed; Bolkan, Håkon Angell. (2018) Important Research Elements in Aiding Training: Reply. World Journal of Surgery
  Kommentar
• Grimes, Caris E.; Quaife, Matthew; Kamara, Thaim B.; Lavy, Christopher B.D.; Leather, Andy J.M.; Bolkan, Håkon Angell. (2018) Macroeconomic costs of the unmet burden of surgical disease in Sierra Leone: A retrospective economic analysis. BMJ Open
  Vitenskapelig artikkel
• Bolkan, Håkon Angell; van Duinen, Aalke Johan; Samai, Mohammed; Bash-Taqi, Donald Alpha; Gassama, Ibarahim; Waalewijn, Bart; Wibe, Arne; Schreeb, Johan von. (2018) Admissions and surgery as indicators of hospital functions in Sierra Leone during the west-African Ebola outbreak. BMC Health Services Research
  Vitenskapelig artikkel
• Burgos, Carmen Mesas; Bolkan, Håkon Angell; Bash-Taqi, Donald; Hagander, Lars; Schreeb, Johan von. (2018) Correction to: The Met Needs for Pediatric Surgical Conditions in Sierra Leone: Estimating the Gap. World Journal of Surgery
  Vitenskapelig artikkel

2017

• Waalewijn, Bart; van Duinen, Aalke Johan; Koroma, AP; Rijken, Markus J.; Elhassein, Mohammed; Bolkan, Håkon Angell. (2017) Learning Curve Characteristics for Caesarean Section Among Associate Clinicians: A Prospective Study from Sierra Leone. World Journal of Surgery
  Vitenskapelig artikkel
• Bolkan, Håkon Angell. (2017) Chapter 6: A clinical officer training program in Sierra Leone and the decline of surgical care due to Ebola. Johns Hopkins University Press
  Faglig monografi
• Bolkan, Håkon Angell; van Duinen, Aalke Johan; Waalewijn, Bart; Elhassein, Mohamed; Kamara, T. B.; Deen, G F; Bundu, Ibrahim; Ystgaard, Brynjulf; Schreeb, Johan von; Wibe, Arne. (2017) Safety, productivity and predicted contribution of a surgical task-sharing programme in Sierra Leone. British Journal of Surgery
  Vitenskapelig artikkel
• Burgos, Carmen Mesas; Bolkan, Håkon Angell; Bash-Taqi, Donald; Hagander, Lars; Screeb, Johan von. (2017) The met needs for pediatric surgical conditions in Sierra Leone: estimating the gap. World Journal of Surgery
  Vitenskapelig artikkel

2016

• Haaskjold, Yngvar Lunde; Bolkan, Håkon Angell; Krogh, Kurt; Jongopi, James; Lundeby, Karen Marie; Mellesmo, Sindre; Garcés, Pedro San José; Jøsendal, Ola; Øpstad, Åsmund; Svensen, Erling. (2016) Clinical features of and risk factors for fatal Ebola virus disease, Moyamba District, Sierra Leone, December 2014–February 2015. Emerging Infectious Diseases
  Vitenskapelig artikkel
• Bolkan, Håkon Angell; Haganger, Lars; Screeb, J von; Bash-Taqi, Donald A.; Kamara, T B; Salvesen, Øyvind; Wibe, Arne. (2016) The Surgical Workforce and Surgical Provider Productivity in Sierra Leone: A Countrywide Inventory. World Journal of Surgery
  Vitenskapelig artikkel
• Brolin, Kim; van Duinen, Aalke Johan; Nordenstedt, Helena; Hoijer, J; Molnes, Ragnhild; Frøseth, Torunn Wigum; Koroma, AP; Darj, Elisabeth; Bolkan, Håkon Angell; Ekström, A. (2016) The Impact of the West Africa Ebola Outbreak on Obstetric Health Care in Sierra Leone. PLOS ONE
  Vitenskapelig artikkel
• Arranz, Javier; Lundeby, Karen Marie; Hassan, Shoaib; Fuentes, Luis Matías Zabala; Garcés, Pedro San José; Haaskjold, Yngvar Lunde; Bolkan, Håkon Angell; Krogh, Kurt; Jongopi, James; Mellesmo, Sindre. (2016) Clinical features of suspected Ebola cases referred to the Moyamba ETC, Sierra Leone: Challenges in the later stages of the 2014 outbreak. BMC Infectious Diseases
  Vitenskapelig artikkel

2015

• Bolkan, Håkon Angell; Schreeb, Johan von; Samai, Mohammed; Bash-Taqi, Donald A.; Kamara, Thaim Buim; Salvesen, Øyvind; Ystgaard, Brynjulf; Wibe, Arne. (2015) Met and unmet needs for surgery in Sierra Leone: A comprehensive, retrospective, countrywide survey from all health care facilities performing operations in 2012. Surgery
  Vitenskapelig artikkel
• Bolkan, Håkon Angell; Schreeb, Johan; Samai, Mohamed; Bash-Taqi, Donald Alpha; Kamara, T. B.; Salvesen, Øyvind; Ystgaard, Brynjulf; Wibe, Arne. (2015) Met and unmet need for surgery in Sierra Leone: a comprehensive retrospective countrywide survey from all healthcare facilities performing surgery in 2012. Surgery
  Vitenskapelig artikkel
• Bjerring, A W; Lier, M E; Roed, S M; Vestby, P F; Endreseth, Birger Henning; Salvesen, Øyvind; Screeb, J von; Wibe, Arne; Kamara, T B; Bolkan, Håkon Angell. (2015) Assessment of caesarean section and inguinal hernia repair as proxy indicators of total number of surgeries. The Lancet
  Konferanseabstract
• Milland, Maria; Bolkan, Håkon Angell. (2015) Surgical task shifting in Sierra Leone: a controversial attempt to reduce maternal mortality. BJOG: An International Journal of Obstetrics and Gynaecology
  Vitenskapelig artikkel
• Bolkan, Håkon Angell; Hagander, Lars; Schreeb, Johan von; Bash-Taqi, Donald A.; Kamara, T. B.; Salvesen, Øyvind; Wibe, Arne. (2015) Who is performing surgery in low-income settings: a countrywide inventory of the surgical workforce distribution and scope of practice in Sierra Leone. The Lancet
  Konferanseabstract
• Bolkan, Håkon Angell; Schreeb, Johan von; Samai, Mohammed; Bash-Taqi, Donald A.; Kamara, T. B.; Salvesen, Øyvind; Ystgaard, Brynjulf; Wibe, Arne. (2015) Rates of caesarean section and total volume of surgery in Sierra Leone: a retrospective survey. The Lancet
  Konferanseabstract
• Bjerring, Anders Wold; Lier, Marius Eknæs; Rød, Siri Malene; Vestby, Pia Fiskaa; Melf, Klaus; Endreseth, Birger Henning; Salvesen, Øyvind; Schreeb, Johan von; Wibe, Arne; Kamara, Thaim Buim. (2015) Assessing cesarean section and inguinal hernia repair as proxy indicators of the total number of surgeries performed in Sierra Leone in 2012. Surgery
  Vitenskapelig artikkel

2014

• Bolkan, Håkon Angell; Holmer, Hampus; Hagander, L. (2014) WHO-initiativ för ökad tillgång till kirurgi i resursfattiga områden. Läkartidningen
  Kommentar
• Milland, Maria; Bolkan, Håkon Angell. (2014) Enhancing access to emergency obstetric care through surgical task shifting in Sierra Leone: confrontation with Ebola during recovery from civil war. Acta Obstetricia et Gynecologica Scandinavica
  Leder
• van Duinen, Aalke Johan; Waalewijn, Bart; Ystgaard, Brynjulf; Bolkan, Håkon Angell. (2014) Strengthening of the Sierra Leonean Health System by Implementing a Surgical Task Shifting Programme. MT Bulletin of the Netherlands Society for Tropical Medicine and International Health
  Fagartikkel
• Bolkan, Håkon Angell; Bash-Taqi, Donald A.; Samai, Mohammed; Gerdin, Martin; Schreeb, Johan von. (2014) Ebola and Indirect Effects on Health Service Function in Sierra Leone. PLOS Currents
  Vitenskapelig artikkel

2013

• Bolkan, Håkon Angell; Ystgaard, Brynjulf. (2013) Kirurgien som ikke blir gjort. Kirurgen
  Populærvitenskapelig artikkel
• Ystgaard, Brynjulf; Bolkan, Håkon Angell. (2013) Kirurgi og global helse. Overlegen
  Populærvitenskapelig artikkel
• Ystgaard, Brynjulf; Bolkan, Håkon Angell. (2013) Surgery and task shifting in the rainforest. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Populærvitenskapelig artikkel
• Bolkan, Håkon Angell; Ystgaard, Brynjulf. (2013) Kirurgisk opplæring i Sierra Leone. Kirurgen
  Populærvitenskapelig artikkel
• van Duinen, Aalke Johan; Westendorp, J; Ashley, T; Bash-Taqi, D; Jorgensen, P; Bolkan, Håkon Angell. (2013) The surgical training program: increasing surgical capacity in sierra leone by training medical doctors and community health officers in surgical and obstetric skills - progress report. Tropical medicine & international health
  Konferanseabstract

2011

• Dvergsdal, Elin Yli; Bolkan, Håkon Angell. (2011) The global health workforce crisis. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Populærvitenskapelig artikkel

2009

• Bolkan, Håkon Angell. (2009) Knuste liv. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Vitenskapelig artikkel

2008

• Bolkan, Håkon Angell. (2008) Militær bistand og den humanitære slagmark. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Vitenskapelig artikkel
• Bolkan, Håkon Angell. (2008) Malaria – en stille katastrofe. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Populærvitenskapelig artikkel