1. Department of Family Science and School of Public Health, University of Maryland, College Park, Maryland, USA.
2. Department of Behavioral and Community Health, School of Public Health, University of Maryland, College Park, Maryland, USA.
3. Laboratory of Digital and Computational Demography, Max Planck Institute for Demographic Research, Rostock, Germany.
4. Department of Sociology, College of Behavioral and Social Sciences, University of Maryland, College Park, Maryland, USA.