Grundtvig, Morten, Torfinn Eriksen-Volnes, Stein Ørn, Eva Kjøl Slind, and Lars Gullestad. 2023. “6 Min Walk Test Is a Strong Independent Predictor of Death in Outpatients With Heart Failure ”. Norsk Epidemiologi 31 (1-2). https://www.ntnu.no/ojs/index.php/norepid/article/view/5621.