1. Department of Consumer Science, Purdue University, West Lafayette, Indiana.
2. Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana.
3. Cancer Prevention, Detection and Control Research Program, Duke University Medical Center, Durham, North Carolina.
4. Department of Community and Family Medicine, Duke University Medical Center, Durham, North Carolina.
5. Division of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan.
6. Department of Human Development and Family Studies, Purdue University, West Lafayette, Indiana.