1. Alcohol Research Group, Emeryville, CA, USA
2. School of Social Welfare, University of California, Berkeley, CA, USA
3. Department of Community and Behavioral Health, College of Public Health, University of Iowa, Iowa City, IA, USA
4. Department of Psychiatry and Biobehavioral Sciences, Integrated Substance Abuse Programs, University of California, Los Angeles, CA, USA
5. Independent clinician