1. Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland.
2. Department of Head and Neck Surgery, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.
3. Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.
4. Core Genotyping Facility, SAIC-Frederick, Inc., Gaithersburg, Maryland.
5. Division of Cancer Epidemiology and Genetics, National Cancer Institute, Advanced Technology Center, Gaithersburg, Maryland.
6. Information Management Systems, Rockville, Maryland.
7. INSERM (National Institute of Health and Medical Research), CESP (Center for Research in Epidemiology and Population Health), Environmental Epidemiology of Cancer, Villejuif, France.
8. University Paris-Sud, Villejuif, France.
9. Radiation Epidemiology Group Inserm, Villejuif, France.
10. Institut Gustave Roussy, Villejuif, France.
11. University Paris XI, Villejuif, France.