Author information: (1)Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands. j.van.dongen@vu.nl. (2)Amsterdam Reproduction and Development (AR&D) Research Institute, Amsterdam, The Netherlands. j.van.dongen@vu.nl. (3)Amsterdam Public Health Research Institute, Amsterdam, The Netherlands. j.van.dongen@vu.nl. (4)Queensland Institute of Medical Research Berghofer, Brisbane, QLD, Australia. (5)Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia. (6)Department of Biological Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands. (7)Amsterdam Reproduction and Development (AR&D) Research Institute, Amsterdam, The Netherlands. (8)Amsterdam Public Health Research Institute, Amsterdam, The Netherlands. (9)Altius Institute for Biomedical Sciences, Seattle, WA, USA. (10)Department of Psychology and Neuroscience and Center for Genomic and Computational Biology, Duke University, Durham, NC, USA. (11)Institute for Molecular Medicine Finland FIMM, University of Helsinki, Helsinki, Finland. (12)Department of Twin Research and Genetic Epidemiology, Kings College London, London, UK. (13)University of Exeter Medical School, University of Exeter, Exeter, UK. (14)Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK. (15)MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK. (16)Population Health Science, Bristol Medical School, University of Bristol, Bristol, UK. (17)Avera Institute for Human Genetics, Sioux Falls, SD, USA. (18)Institute of Molecular and Cellular Biology, A*STAR, Singapore, Singapore. (19)Department of Cell and Developmental Biology, University College London, London, UK. (20)Molecular Epidemiology, Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands. (21)Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands. (22)Genome Institute of Singapore, A*STAR, Singapore, Singapore. (23)Medical Genetics Department, KOC University, School of Medicine, Istanbul, Turkey.