About the Authors

Christine van der Leeuw

c.vanderleeuw@maastrichtuniversity.nl

Affiliation Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Centre, Maastricht, the Netherlands

Sanne Peeters

Affiliations Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Centre, Maastricht, the Netherlands, Faculty of Psychology and Educational Sciences, Open University of the Netherlands, Heerlen, the Netherlands

Ed Gronenschild

Affiliation Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Centre, Maastricht, the Netherlands

Stijn Michielse

Affiliation Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Centre, Maastricht, the Netherlands

Marcel Verbeek

Affiliations Departments of Neurology and Laboratory Medicine, Radboud University Medical Centre, Nijmegen, the Netherlands, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, the Netherlands

Paul Menheere

Affiliation Central Diagnostic Laboratory, Maastricht University Medical Centre, Maastricht, the Netherlands

Jim van Os

Affiliations Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Centre, Maastricht, the Netherlands, Department of Psychosis Studies, Institute of Psychiatry, King’s College London, United Kingdom

Machteld Marcelis

Affiliations Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Centre, Maastricht, the Netherlands, Institute for Mental Health Care Eindhoven (GGzE), Eindhoven, the Netherlands

on behalf of Genetic Risk and Outcome in Psychosis (G.R.O.U.P.)

Membership of G.R.O.U.P. is provided in the Acknowledgments.

Competing Interests

Jim van Os is or has been an unrestricted research grant holder with, or has received financial compensation as an independent symposium speaker from, Lilly, BMS, Lundbeck, Organon, Janssen, GlaxoSmithKline, AstraZeneca, Pfizer, and Servier. Machteld Marcelis has received financial compensation as an independent symposium speaker from Lilly and Janssen. This does not alter our adherence to PLOS ONE policies on sharing data and materials. All other authors report no biomedical financial interests or potential conflicts of interest.

Author Contributions

Conceptualization: JO MM. Data curation: SP EG SM. Formal analysis: CL MM JO. Funding acquisition: JO. Investigation: SP. Methodology: CL MM JO. Project administration: SP. Resources: MV PM SM EG. Software: EG. Supervision: MM JO. Validation: CL MM JO. Visualization: CL MM. Writing – original draft: CL MM. Writing – review & editing: CL MM JO.