1. Department of Demography, University of California Berkeley , Berkeley, California , USA
2. Department of Sociology, University of California Irvine , Irvine, California , USA
3. Department of Biomedical and Nutritional Sciences, University of Massachusetts, Lowell , Lowell, Massachusetts , USA
4. College of Fine Arts, Humanities and Social Sciences, University of Massachusetts Lowell , Lowell, Massachusetts , USA
5. Department of Medicine, Medical Sciences Campus, University of Puerto Rico , San Juan , Puerto Rico
6. School of Public Health, University of California Berkeley , Berkeley, California , USA