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Poulakis V, Witzsch U, Kollias A, Becht E.Poulakis V, et al. Among authors: witzsch u.Urologe A. 2001 Jan;40(1):29-37. doi: 10.1007/s001200050430.Urologe A. 2001.PMID: 11225427German.
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Becht E, Witzsch U, Moll V, Stein R.Becht E, et al. Among authors: witzsch u.Aktuelle Urol. 2008 Mar;39(2):153-60. doi: 10.1055/s-2005-873224.Aktuelle Urol. 2008.PMID: 18379971German.No abstract available.