1. Department of Individual, Family and Community Education, University of New Mexico, Albuquerque, New Mexico
2. Division of Adolescent Medicine, Department of Pediatrics, University of New Mexico Health Sciences Center, Albuquerque, New Mexico
3. Division of Epidemiology, Biostatistics and Preventive Medicine, Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico
4. Department of Sociology, University of New Mexico, Albuquerque, New Mexico