1. Department of Sociology, Yale University , New Haven, CT 06520 , USA
2. Department of Biostatistics, Yale University , New Haven, CT 06520 , USA
3. Office of Population Research, Princeton University , Princeton, NJ 08540 , USA
4. School of Public and International Affairs, Princeton University , Princeton, NJ 08540 , USA
5. Rory Meyers College of Nursing, New York University , New York, NY 10010 , USA
6. Veterans Affairs Connecticut Healthcare System , West Haven, CT 06516 , USA
7. Department of Medicine, Yale School of Medicine , New Haven, CT 06520 , USA