[1] Akershus Univ Hosp, Div Mental Hlth Serv, Sykehusveien 25, N-1478 Lorenskog, Norway
[2] Univ Oslo, Inst Clin Med, Campus Ahus, Oslo, Norway
[3] Akershus Univ Hosp, Hlth Serv Res Unit, Lorenskog, Norway
[4] Univ Oslo, Fac Med, Ctr Med Eth, Inst Hlth & Soc, Oslo, Norway