Affiliation: | 1. Professor and Chairman, Division of Radiation Oncology, University of Rochester Cancer Center, 601 Elmwood Ave., Rochester, NY 14642 USA;2. Associate Director, Cancer Therapy Evaluation Program, Division of Cancer Treatment, National Cancer Institute, Bethesda, MD 20014 USA;3. Director, Cancer Center, Dept. of radiation Therapy, University of Pennsylvania, 3400 Spruce St., Philadelphia, PA 19104 USA |