1. Department of Health Services Research, Management and Policy, University of Florida, Gainesville
2. College of Public Health and Health Professions, University of Florida, Gainesville
3. Now with School of Dental Medicine, University of Pennsylvania, Philadelphia
4. Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, Florida
5. Department of Gastrointestinal Oncology, Moffitt Cancer Center, Tampa, Florida