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Frederix GW, Severens JL, Hövels AM, van Hasselt JG, Raaijmakers JA, Schellens JH.Frederix GW, et al. Among authors: severens jl.Breast Cancer Res Treat. 2013 Jun;139(2):489-95. doi: 10.1007/s10549-013-2532-z. Epub 2013 May 5.Breast Cancer Res Treat. 2013.PMID: 23645005