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Floyd RC, Roberts WE.Floyd RC, et al. Among authors: roberts we.Obstet Gynecol Clin North Am. 1992 Dec;19(4):719-32.Obstet Gynecol Clin North Am. 1992.PMID: 1484656Review.
Perry KG Jr, Hess LW, Roberts WE, Allbert JR, Floyd RC, McCaul JF, Martin RW, Martin JN Jr, Morrison JC.Perry KG Jr, et al. Among authors: roberts we.Fetal Diagn Ther. 1991;6(1-2):87-92. doi: 10.1159/000263629.Fetal Diagn Ther. 1991.PMID: 1768351
Roberts WE, Morrison JC, Perry KG Jr, Floyd RC, McLaughlin BN, Fox MD.Roberts WE, et al.J Reprod Med. 1995 Feb;40(2):95-100.J Reprod Med. 1995.PMID: 7738935
Morrison JC, Chez BF, Davis ID, Martin RW, Roberts WE, Martin JN Jr, Floyd RC.Morrison JC, et al. Among authors: roberts we.Am J Obstet Gynecol. 1993 Jan;168(1 Pt 1):63-6. doi: 10.1016/s0002-9378(12)90886-8.Am J Obstet Gynecol. 1993.PMID: 8420351
Rust OA, Perry KG Jr, Roberts WE.Rust OA, et al. Among authors: roberts we.Obstet Gynecol Clin North Am. 1998 Sep;25(3):553-71. doi: 10.1016/s0889-8545(05)70027-9.Obstet Gynecol Clin North Am. 1998.PMID: 9710911Review.