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Van Vugt HH, Swarts HJ, Van de Heijning BJ, Van der Beek EM.Van Vugt HH, et al. Among authors: swarts hj.Biol Reprod. 2004 Sep;71(3):813-9. doi: 10.1095/biolreprod.104.028936. Epub 2004 May 12.Biol Reprod. 2004.PMID: 15140796