1Divisions of Medical Oncology and Cancer Epidemiology and Control, Dana-Farber Cancer InstituteBoston, Mass.Harvard Medical SchoolBoston, Mass.
2Division of Cancer Epidemiology and Control, Dana-Farber Cancer Institute, and Harvard School of Public HealthBoston, Mass.
3Ophthalmic Oncology Center, New York Hospital-Cornell Medical CenterNew York, N.Y.
4Radiation Epidemiology Branch, National Cancer InstituteRockville, Md.
5Harvard School of Public Health
6Massachusetts Eye and Ear InfirmaryBoston, Mass.Harvard Medical School
7Joint Center for Radiation Therapy, Boston Children's HospitalBoston, Mass.Harvard Medical School