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Dar S, Librach CL, Gunby J, Bissonnette F, Cowan L; IVF Directors Group of Canadian Fertility and Andrology Society.Dar S, et al. Among authors: librach cl.Hum Reprod. 2013 Apr;28(4):924-8. doi: 10.1093/humrep/des448. Epub 2013 Jan 24.Hum Reprod. 2013.PMID: 23349411