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de Veciana M, Towers CV, Major CA, Lien JM, Toohey JS.de Veciana M, et al. Among authors: towers cv.Am J Obstet Gynecol. 1994 Oct;171(4):1008-13. doi: 10.1016/0002-9378(94)90024-8.Am J Obstet Gynecol. 1994.PMID: 7943063Clinical Trial.