Hjellvik, Vidar, Department of Chronic diseases and Ageing, Norwegian Institute of Public Health, Oslo, Norway, Norway

• Norsk Epidemiologi Vol. 29 No. 1-2 (2021): Tema: Farmakoepidemiologi - Articles
  Hormonal contraceptive use in Norway, 2006-2020, by contraceptive type, age and county: A nationwide register-based study
  Abstract  pdf