1. Population Research Institute, The Pennsylvania State University , State College, Pennsylvania , USA
2. Human Development and Family Studies, The Pennsylvania State University , State College, Pennsylvania , USA
3. Department of Sociology and Criminology, The Pennsylvania State University , State College, Pennsylvania , USA
4. Department of Epidemiology, School of Public Health, University of Michigan , Ann Arbor, Michigan , USA
5. Demography Program, School of Public Health, University of Puerto Rico , San Juan, Puerto Rico , USA