1. Psychosis Centre; Department of Psychiatry and Psychotherapy; Centre for Psychosocial Medicine; University Medical Center Hamburg-Eppendorf (UKE); Hamburg Germany
2. Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics; UKE; Hamburg Germany
3. The Zucker Hillside Hospital; Psychiatry Research; Glen Oaks NY USA
4. University Hospital of Child and Adolescent Psychiatry; University of Bern; Bern Switzerland
5. Department of Clinical Psychology and Psychotherapy; University of Hamburg; Hamburg Germany
6. Center for Mental Health; Department of Psychiatry, Psychotherapy and Psychosomatics; Asklepios Hospital Harburg; Hamburg Germany
7. Center for Mental Health; Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics; Asklepios Hospital Harburg; Hamburg Germany
8. Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy; University Hospital Muenster; Münster Germany
9. Department of Medical Biometry and Epidemiology; UKE; Hamburg Germany