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Schwingl PJ, Meirik O, Kapp N, Farley TM; HRP Multicenter Study of Prostate Cancer and Vasectomy.Schwingl PJ, et al. Among authors: meirik o.Contraception. 2009 May;79(5):363-8. doi: 10.1016/j.contraception.2008.11.015. Epub 2009 Feb 24.Contraception. 2009.PMID: 19341848