1. Department of Sociology, University at Albany, State University of New York , Albany, New York , USA
2. Department of Sociology, University of Nebraska—Lincoln , Lincoln, Nebraska , USA
3. Departments of Sociology and Criminology, and Anthropology, The Pennsylvania State University , University Park, Pennsylvania , USA
4. Population Research Institute, The Pennsylvania State University , University Park, Pennsylvania , USA
5. Independent Consultant , Baltimore, Maryland , USA