1 Department of Sociology and Criminology, Department of Anthropology, Pennsylvania State University, University Park, PA 168702-6211 USA.
2 Department of Sociology and Criminology, Pennsylvania State University, University Park, PA 168702-6211 USA.
3 School of Demography, Australian National University, Canberra, ACT 2600 Australia.
4 Department of Sociology, Arts and Sciences 351, University at Albany, 1400 Washington Avenue, Albany, NY 12222 USA.
5 Department of Statistics, Federal University of Technology, Akure, Nigeria.
6 Faculty of Public Health, Thammasat University, Lampang, Thailand.
7 Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Salaya, Thailand.
8 Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
9 Department of Population Health and Disease Prevention, Department of Epidemiology and Biostatistics, University of California, Irvine, USA.
10 CUNY Institute for Demographic Research, Marxe School of International and Public Affairs, Baruch College, City University of New York, New York, USA.
11 Department of Geography, University of Colorado, Boulder, USA.
12 Institute of Behavioral Science, University of Colorado Boulder, Boulder, USA.
13 Department of Economics, Stony Brook University, and Population Council, New York, NY USA.
14 Community and Environmental Sociology, University of Wisconsin-Madison, 316B Agricultural Hall, 1450 Linden Drive, Madison, WI 53706 USA.
15 Geography and Geoinformation Science Department, George Mason University, 4400 University Drive, MS 6C3, Fairfax, VA 22030-4444 USA.