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Markham SM, Carpenter SE, Rock JA.Markham SM, et al. Among authors: carpenter se.Obstet Gynecol Clin North Am. 1989 Mar;16(1):193-219.Obstet Gynecol Clin North Am. 1989.PMID: 2664618Review.
Carpenter SE, Santanam N, Murphy AA, Rock JA, Parthasarathy S.Carpenter SE, et al.Fertil Steril. 1996 Jul;66(1):90-4.Fertil Steril. 1996.PMID: 8752616Free article.
Carpenter SE, Rock JA.Carpenter SE, et al.Int J Gynaecol Obstet. 1987 Apr;25(2):151-3. doi: 10.1016/0020-7292(87)90010-5.Int J Gynaecol Obstet. 1987.PMID: 2884141