[1] Aarhus Univ Hosp, Psychosis Res Unit, Child & Adolescent Mental Hlth Ctr Mental Hlth Se, Aarhus, Denmark
[2] iPSYCH, Lundbeck Fdn Initiat Integrat Psychiat Res, Aarhus, Denmark
[3] Dalhousie Univ, Dept Psychiat, Halifax, NS, Canada
[4] Nova Scotia Hlth Author, Halifax, NS, Canada
[5] Aarhus Univ, Lundbeck Fdn Initiat Integrat Psychiat Res, Natl Ctr Register Based Res, iPSYCH,NCRR, Aarhus, Denmark
[6] Hosp Telemark, Dept Child & Adolescent Psychiat, Skien, Norway
[7] Copenhagen Univ Hosp, Mental Hlth Ctr Copenhagen, Copenhagen, Denmark
[8] Aarhus Univ Hosp, Psychosis Res Unit, Aarhus, Denmark
[9] Aarhus Univ, CIRRAU Ctr Integrated Register Based Res, Aarhus, Denmark