1. Department of Human Development and Family Studies, Colorado State University, Fort Collins, Colorado
2. Alexandria Public Schools, Alexandria, Virginia
3. Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, Michigan
4. Alternative Education Services at the Volusia County School District, Deland, Florida
5. Departments of Epidemiology and Health Policy Research
6. Pediatrics, University of Florida, Gainesville, Florida