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Reich O, Schlenker B, Gratzke C, Tilki D, Riecken M, Stief C, Seitz M, Bachmann A.Reich O, et al. Among authors: gratzke c.Eur Urol. 2010 Apr;57(4):693-7. doi: 10.1016/j.eururo.2009.05.031. Epub 2009 May 26.Eur Urol. 2010.PMID: 19482414
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Reich O, Noll M, Gratzke C, Bachmann A, Waidelich R, Seitz M, Schlenker B, Baumgartner R, Hofstetter A, Stief CG.Reich O, et al. Among authors: gratzke c.Urology. 2006 Jun;67(6):1144-8. doi: 10.1016/j.urology.2006.01.002.Urology. 2006.PMID: 16765168
Reich O, Seitz M, Gratzke C, Schlenker B, Bachmann A, Stief C.Reich O, et al. Among authors: gratzke c.Urologe A. 2006 Jun;45(6):769-80; quiz 781-2. doi: 10.1007/s00120-006-1039-1.Urologe A. 2006.PMID: 16788796German.