1. Department of EpidemiologyRollins School of Public Health, Emory UniversityAtlanta Georgia
2. Winship Cancer Institute, Emory UniversityAtlanta Georgia
3. Department of EpidemiologyGeisel School of Medicine at DartmouthLebanon New Hampshire
4. Department of MedicineGeisel School of Medicine at DartmouthLebanon New Hampshire
5. Department of EpidemiologyUniversity of North Carolina School of MedicineChapel Hill North Carolina
6. Department of MedicineDivision of Digestive Diseases, School of Medicine, Emory UniversityAtlanta Georgia
7. Consultants in GastroenterologyWest Columbia South Carolina