1. Department of Geography and Environmental Studies Program, Colgate University, Hamilton, New York, USA;
2. Department of Demography, Faculty of Social Sciences, University of Tehran, Tehran, Iran
3. School of Demography, Research School of Social Sciences, College of Arts and Social Sciences, The Australian National University, Canberra, Australian Capital Territory, Australia
4. Department of Sociology, The Graduate Center, City University of New York, New York, NY, USA
5. Department of Sociology, Queens College, City University of New York, Queens, New York, USA
6. CUNY Institute for Demographic Research, City University of New York, New York, NY, USA