University of California, Los Angeles

Professor, Department of Political Science, Lund University

Professor of Geography, University of British Columbia

Associate Professor at Dalla Lana School of Public Health, University of Toronto

Criminology, The Open University

Professor Emeritus, Dept of Sociology, University of Alberta

Professor and Director, School of Public Health Sciences, University of Waterloo

University of Georgia

Professor emeritus, Fielding Graduate University

Professor