Abstract
Stordal, K; Selvaag, E; Greve-Isdahl, M
Stordal, K (reprint author), Sykehuset Ostfold, Gralum, Norway.; Stordal, K (reprint author), Folkehelseinstituttet, Oslo, Norway.
TIDSSKRIFT FOR DEN NORSKE LAEGEFORENING, 2018; 138 (17): 1593