University of Helsinki

Research Professor, Institute for Social Research, University of Michigan

Postdoctoral Scholar, University of California, San Francisco

Hugh Roy and Lillie Cranz Cullen Distinguished University Professor, University of Houston

Emeritus Professor of Psychiatry & Biostatistics, University of Iowa

Professor of Population and Public Health Sciences

Research Professor, Department of Psychology, University at Buffalo

Professor, Department of Psychiatry and Behavioral Sciences, University of Washington

Distinguished Professor of Sociology, Center of Alcohol Studies, Rutgers University

Director, Research Institute on Addictions, University at Buffalo