University of Oslo, Oslo, P.B. 1046 Blinderen, Norway
University of Oslo, Oslo, Post box 1046, Blindern, Norway
Kyambogo University, Kampala, Uganda
The Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway
Oslo University hospital, Oslo, Norway
University of Oslo, Oslo, Norway
Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway
Sunnaas Hospital, Nesodden, Norway
Stavanger University Hospital, Stavanger, Rogaland, Norway
Akershus University Hospital, Oslo, Akershus, Norway
Vestfold Hospital Trust, Tonsberg, Vestfold, Norway
St. Olavs Hospital, Trondheim, Norway
Sorlandet Hospital Kristiansand, Kristiansand, Norway