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Endt H, Sprung CN, Keller U, Gaipl U, Fietkau R, Distel LV.Endt H, et al. Among authors: keller u.J Gerontol A Biol Sci Med Sci. 2011 Apr;66(4):367-75. doi: 10.1093/gerona/glq197. Epub 2010 Nov 15.J Gerontol A Biol Sci Med Sci. 2011.PMID: 21081476
Auer J, Keller U, Schmidt M, Ott O, Fietkau R, Distel LV.Auer J, et al. Among authors: keller u.Radiol Oncol. 2014 Jan 22;48(1):80-6. doi: 10.2478/raon-2013-0061. eCollection 2014 Mar.Radiol Oncol. 2014.PMID: 24587784Free PMC article.
Keller U, Kuechler A, Liehr T, Müller E, Grabenbauer G, Sauer R, Distel L.Keller U, et al.Strahlenther Onkol. 2004 May;180(5):289-96. doi: 10.1007/s00066-004-1200-y.Strahlenther Onkol. 2004.PMID: 15127159