Professor of Research Methods, University of Cincinnati

Professor of Qualitative Research, Freie Universität Berlin

Faculty of Education, University of Cambridge

Emeritus Professor of Education, Louisiana State University

Professor of Psychology, Alps Adria University Klagenfurt

Portland State University

Professor for Methods of Social Research, Department of Sociology, Technische Universität …

University of Colorado Denver

Centre for Diet and Activity Research, MRC Epidemiology Unit, University of Cambridge

Professor of Health Services Research, University of Sheffield