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Glynne-Jones R, Meadows H, Wan S, Gollins S, Leslie M, Levine E, McDonald AC, Myint S, Samuel L, Sebag-Montefiore D; National Cancer Research Institute Anal Sub Group and Colorectal Clinical Oncology Group.Glynne-Jones R, et al.Int J Radiat Oncol Biol Phys. 2008 Sep 1;72(1):119-26. doi: 10.1016/j.ijrobp.2007.12.012. Epub 2008 May 9.Int J Radiat Oncol Biol Phys. 2008.PMID: 18472366Clinical Trial.