Grundtvig M, Eriksen-Volnes T, Ørn S, Slind EK, Gullestad L. 6 min walk test is a strong independent predictor of death in outpatients with heart failure . Nor J Epidemiol [Internet]. 2023Oct.20 [cited 2024Nov.23];31(1-2). Available from: https://www.ntnu.no/ojs/index.php/norepid/article/view/5621