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van der Cruijsen-Koeter IW, Vis AN, Roobol MJ, Wildhagen MF, de Koning HJ, van der Kwast TH, Schröder FH.van der Cruijsen-Koeter IW, et al. Among authors: roobol mj.J Urol. 2005 Jul;174(1):121-5. doi: 10.1097/01.ju.0000162061.40533.0f.J Urol. 2005.PMID: 15947595Clinical Trial.