1. Professor Emeritus of Psychology, Department of Psychiatry, University of Michigan , Ann Arbor, MI , USA
2. Professor Emeritus of Medicine, Division of Cardiology, University of California San Francisco , CA , USA
3. Professor Emerita, Behavioral Pharmacology Research Unit, Johns Hopkins School of Medicine , Baltimore, MD , USA
4. Vice President, Research, Health Policy and Abuse Liability, Pinney Associates, Bethesda, MD, and Professor, Adjunct, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine , Baltimore, MD , USA
5. Professor University of Minnesota, Division of Epidemiology and Community Health , Minneapolis, MN , USA
6. Toronto, ON, Canada
7. Professor of Psychiatry, Epidemiology, and Psychology. UPMC Western Psychiatric Hospital, University of Pittsburgh , Pittsburgh, PA , USA
8. Professor Emeritus, Division of Epidemiology and Community Health, University of Minnesota , Minneapolis, MN , USA