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Weeks JW, Major CA, de Veciana M, Morgan MA.Weeks JW, et al.Am J Obstet Gynecol. 1994 Oct;171(4):1003-7. doi: 10.1016/0002-9378(94)90023-x.Am J Obstet Gynecol. 1994.PMID: 7943062
Major CA, deVeciana M, Weeks J, Morgan MA.Major CA, et al.Am J Obstet Gynecol. 1998 Oct;179(4):1038-42. doi: 10.1016/s0002-9378(98)70211-x.Am J Obstet Gynecol. 1998.PMID: 9790394
Weeks JW, Reynolds L, Taylor D, Lewis J, Wan T, Gall SA.Weeks JW, et al.Obstet Gynecol. 1997 Nov;90(5):815-8. doi: 10.1016/S0029-7844(97)00421-3.Obstet Gynecol. 1997.PMID: 9351770