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Hu Y, Caruthers SD, Low DA, Parikh PJ, Mutic S.Hu Y, et al. Among authors: low da.Int J Radiat Oncol Biol Phys. 2013 May 1;86(1):198-204. doi: 10.1016/j.ijrobp.2012.12.014. Epub 2013 Feb 13.Int J Radiat Oncol Biol Phys. 2013.PMID: 23414769Free PMC article.