[1] Univ Melbourne, Orygen Youth Hlth Res Ctr, Ctr Youth Mental Hlth, Melbourne, Vic, Australia
[2] Univ Med Ctr Hamburg Eppendorf, PEDIC, Dept Psychiat & Psychotherapy, Ctr Psychosocial Med, Hamburg, Germany
[3] Univ Bern, Dept Child & Adolescent Psychiat, CH-3012 Bern, Switzerland
[4] Univ Melbourne, Dept Clin & Biomed Sci, Melbourne, Vic 3010, Australia
[5] Mental Hlth Res Inst, Parkville, Vic, Australia
[6] Univ Lausanne, Treatment & Early Intervent Psychosis Program TIP, Dept Psychiat CHUV, Clin Cery, CH-1008 Prilly, Switzerland