1. Department of Psychiatry ; Perelman School of Medicine; Center for Studies of Addiction; University of Pennsylvania; Philadelphia Pennsylvania
2. Veterans Integrated Service Network 4 ; Mental Illness Research, Education and Clinical Center; Crescenz VAMC; Philadelphia Pennsylvania
3. Department of Psychiatry and Weill Institute for Neurosciences ; University of California-San Francisco School of Medicine; San Francisco California
4. Department of Medical Sciences ; Frank H. Netter; MD School of Medicine; Quinnipiac University; New Haven Connecticut