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Chang EL, Loeffler JS, Riese NE, Wen PY, Alexander E 3rd, Black PM, Coleman CN.Chang EL, et al. Among authors: coleman cn.Int J Radiat Oncol Biol Phys. 1998 Jan 1;40(1):65-70. doi: 10.1016/s0360-3016(97)00486-0.Int J Radiat Oncol Biol Phys. 1998.PMID: 9422559Clinical Trial.