1. Epidemiology Program, University of Hawaii Cancer CenterHonolulu HI
2. Department of Cancer EpidemiologyMoffitt Cancer CenterTampa FL
3. Department of Gastrointestinal OncologyMoffitt Cancer CenterTampa FL
4. Department of Preventive Medicine and USC Norris Comprehensive Cancer CenterKeck School of Medicine, University of Southern CaliforniaLos Angeles CA
5. Center for Gastrointestinal Biology and Disease, University of North CarolinaChapel Hill NC
6. Wayne State University Karmanos Cancer InstituteDetroit MI
7. Slone Epidemiology Center at Boston UniversityBoston MA
8. Department of Epidemiology and BiostatisticsCase Western Reserve UniversityCleveland OH
9. Division of Cancer PreventionNational Cancer Institute, National Institutes of HealthBethesda MD
10. Division of EpidemiologyDepartment of Medicine, Vanderbilt Epidemiology Center and Vanderbilt‐Ingram Cancer Center, Vanderbilt UniversityNashville TN
11. Division of Cancer Control and Population SciencesNational Cancer Institute, National Institutes of HealthBethesda MD
12. Laboratory of Human CarcinogenesisNational Cancer Institute, National Institutes of HealthBethesda MD
13. Department of GastroenterologyHepatology & Nutrition, the University of Texas M. D. Anderson Cancer CenterHouston TX
14. Division of Cancer Epidemiology and GeneticsNational Cancer Institute, National Institutes of HealthBethesda MD
15. Cancer Prevention Program, Fred Hutchinson Cancer Research CenterSeattle WA
16. Cancer Prevention Institute of CaliforniaFremont CA
17. Stanford Cancer InstituteStanford CA
18. Samuel Oschin Comprehensive Cancer Institute, Cedars‐Sinai Medical CenterLos Angeles CA