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Pérez García FJ, Fernández Gómez JM, Escaf S, Sahagún Argüello JL, Rabade Rey CJ, Pérez del Río MJ.Pérez García FJ, et al.Actas Urol Esp. 1996 Feb;20(2):186-8.Actas Urol Esp. 1996.PMID: 8677819Spanish.