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Hu Y, Betzendahl I, Cortvrindt R, Smitz J, Eichenlaub-Ritter U.Hu Y, et al.Hum Reprod. 2001 Apr;16(4):737-48. doi: 10.1093/humrep/16.4.737.Hum Reprod. 2001.PMID: 11278227