[1] Univ Oslo, Fac Med, Natl Ctr Suicide Res & Prevent, Dept Psychiat, N-0372 Oslo, Norway
[2] Norwegian Univ Sci & Technol, Fac Med, Dept Neurosci, Reg Ctr Child & Adolescent Mental Hlth Cent Norwa, N-7034 Trondheim, Norway
[3] St Olavs Univ Hosp, Dept Child & Adolescent Psychiat, Trondheim, Norway