1. Department of Geography, University of Georgia, Athens, GA 30602, USA
2. Division of Health Services Research, Department of Foundations of Medicine, New York University Long Island School of Medicine, New York, NY 11501, USA
3. Department of Health Policy and Management, College of Public Health, University of Georgia, Athens, GA 30602, USA
4. School of Economics, University of Nottingham Ningbo China, Ningbo 315100, China
5. Department of Public Health Policy and Management, School of Global Public Health, New York University, New York, NY 10003, USA
6. Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
7. Department of Obstetrics, Gynecology, and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
8. Department of Epidemiology & Biostatistics, College of Public Health, University of Georgia, Athens, GA 30602, USA