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Pieper C, Kolankowska I, Jöckel KH.Pieper C, et al.Eur J Cancer Care (Engl). 2012 Nov;21(6):758-65. doi: 10.1111/j.1365-2354.2012.01358.x. Epub 2012 May 15.Eur J Cancer Care (Engl). 2012.PMID: 22587639