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Perez LE, Smith CG, Asch RH.Perez LE, et al. Among authors: asch rh.Fertil Steril. 1981 Jun;35(6):703-5. doi: 10.1016/s0015-0282(16)45569-x.Fertil Steril. 1981.PMID: 6265292Free article.No abstract available.