1. Senior Researcher, Altrecht Mental Health Care, Utrecht, the Netherlands
2. Senior Researcher, Department of Psychiatry, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
3. Senior Researcher, Department of Reintegration and Community Care, Trimbos Institute, Netherlands Institute of Mental Health and Addiction, Utrecht, the Netherlands
4. Head, Department of Reintegration and Community Care, Trimbos Institute, Netherlands Institute of Mental Health and Addiction, Utrecht, the Netherlands
5. Associate Professor, Epidemiologist, Amsterdam Institute for Addiction Research, Academic Medical Center, Department of Psychiatry, University of Amsterdam, Amsterdam, the Netherlands
6. Professor, Department of Psychiatry, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
7. Professor of Psychiatric Epidemiology, Department of Psychiatry and Psychology, School of Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, the Netherlands; Visiting Professor of Psychiatric Epidemiology, King's Health Partners, Department of Psychosis Studies, Institute of Psychiatry, London, United Kingdom