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Parra RO, Andrus CH, Jones JP, Boullier JA.Parra RO, et al. Among authors: boullier ja.J Urol. 1992 Oct;148(4):1140-4. doi: 10.1016/s0022-5347(17)36843-x.J Urol. 1992.PMID: 1404624Review.