Research Professor, Duke University

Distinguished Professor Emeritus of Family Studies and Population Science, University of …

Blue Shield of California

University of California, Davis

Department of Epidemiology, Stanford University

Research Professor and Co-Director of the Biodemography of Aging Research Unit, Duke …

Professor, Department of Sociology and Demography, The University of Texas at San …

Principal Investigator, Center on Aging, NORC at the University of Chicago

Research Associate, University of Chicago

Professor of Population Ecology, University of Zurich