1. Behavioral Genetics of Addiction Laboratory, Department of Psychology, Emory University, Atlanta, GA, USA
2. Smith Lab, Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
3. Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland
4. Department of Public Health, University of Helsinki, Helsinki, Finland
5. Department of Psychiatry & Human Behavior, Brown University, Providence, RI, USA
6. The Genomic Laboratory, Providence VA Medical Center, Providence, RI, USA
7. The Jackson Laboratory, Bar Harbor, ME, USA
8. Department of Human Development and Family Studies, College of Health and Human Sciences, Purdue University, West Lafayette, IN, USA
9. Department of Psychology, University of Colorado at Boulder, Boulder, CO, USA