[1] NTNU, Dept Neurosci, Fac Med, Trondheim, Norway
[2] Univ Trondheim Hosp, Ostmarka Psychiat Dept, St Olavs Hosp, Trondheim, Norway
[3] Univ Oslo, Inst Clin Med, Oslo, Norway
[4] Oslo Univ Hosp, Div Mental Hlth & Addict, Oslo, Norway
[5] Natl Hosp Norway, Dept Neuropsychiat & Psychosomat Med, Oslo Univ Hosp, Oslo, Norway