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Nuyttens JJ, van der Voort van Zyp NC, Verhoef C, Maat A, van Klaveren RJ, van der Holt B, Aerts J, Hoogeman M.Nuyttens JJ, et al.Int J Radiat Oncol Biol Phys. 2015 Feb 1;91(2):337-43. doi: 10.1016/j.ijrobp.2014.10.021.Int J Radiat Oncol Biol Phys. 2015.PMID: 25636758Clinical Trial.