Fanchin, R Premature progesterone elevation spares blastulation but not pregnancy rates in in vitro fertilization with coculture. [electronic resource] - Fertility and sterility Oct 1997 - 648-52 p. digital Publication Type: Journal Article ISSN: 0015-0282 Standard No.: 10.1016/s0015-0282(97)80464-5 doi Subjects--Topical Terms: AdultBlastocyst--physiologyCoculture TechniquesEmbryo ImplantationFemaleFertilization in VitroGonadotropin-Releasing Hormone--agonistsHumansMenotropins--therapeutic usePregnancyPregnancy RateProgesterone--bloodRetrospective Studies