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McKay E, Kaufman RH, Doctor U, Berkova Z, Glazer H, Redko V.McKay E, et al. Among authors: berkova z.J Reprod Med. 2001 Apr;46(4):337-42.J Reprod Med. 2001.PMID: 11354833Clinical Trial.
Crawford SE, Patel DG, Cheng E, Berkova Z, Hyser JM, Ciarlet M, Finegold MJ, Conner ME, Estes MK.Crawford SE, et al. Among authors: berkova z.J Virol. 2006 May;80(10):4820-32. doi: 10.1128/JVI.80.10.4820-4832.2006.J Virol. 2006.PMID: 16641274Free PMC article.