Skjeie Holgeir, Skonnord Trygve, Fetveit Arne, Brekke Mette
Department of General Practice, Institute of Health and Society, University of Oslo , Postboks 1130, Blindern, 0318 Oslo , Norway . E-mail:
Scand J Prim Health Care. 2014 Mar;32(1):52. doi: 10.3109/02813432.2014.892305.