Norwegian University of Science and Technology, Trondheim, Norway
Central Hospital of Northern Norway, Bodø, Norway
Ringerike Hospital, Hønefoss, Norway
University hospital of Bergen, Bergen, Norway
Knut Hagen, Trondheim, Norway
Sigrun Kjøtrød, Trondheim, Norway
Fertility UNit- -St Olavs Hospital, Trondheim, Norway
Østmarka Psychiatric Department, St Olavs Hospital, University Hospital of Trondheim, Trondheim, Norway
NTNU Norwegian University of Science and Technology, Trondheim, Norway
Department of Community Medicine and General Practice, Trondheim, Norway
Dep of Public health and general Practice, Trondheim, Norway