1. Division of Epidemiology, Services, and Prevention Research, National Institute on Drug Abuse, Bethesda, Maryland;
2. Paris Descartes University, Pôles de recherche et d'enseignement supérieur Sorbonne Paris Cité, Paris, France;
3. Department of Psychiatry, Assistance Publique-Hôpitaux de Paris, Hôpital Corentin-Celton, Issy-les-Moulineaux, France;
4. Institut national de la santé et de la recherche médicale unité mixte de recherche 894, Psychiatry and Neurosciences Center, Paris, France;
5. Department of Psychiatry, New York State Psychiatric Institute and Columbia University, New York, New York; and
6. Genetic Epidemiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland;
7. Hospital Universitario de Alava (Santiago), Centre for Biomedical Research in Mental Health Network, Vitoria, Spain