1. Department of Psychiatry, Washington University in St Louis, School of Medicine, St Louis, Missouri
2. Department of Psychiatry, Universidade Federal de São Paulo, São Paulo, Brazil
3. Translational Addictions Research Laboratory, Centre for Addictions and Mental Health, University of Toronto, Toronto, Ontario, Canada
4. Department of Health, Human Performance and Recreation, University of Arkansas, Fayetteville
5. Department of Family and Community Medicine, St Louis University, St Louis, Missouri
6. Department of Health and Outcomes Research, St Louis University, St Louis, Missouri