Bruce G Haffty1, Thomas A Buchholz2. 1. Department of Radiation Oncology, Rutgers-Cancer Institute of New Jersey, Robert Wood Johnson Medical School and New Jersey Medical School, New Brunswick, NJ 08903, USA. Electronic address: hafftybg@cinj.rutgers.edu. 2. Division of Radiation Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA.