Live birth after fresh embryo transfer vs elective embryo cryopreservation/frozen embryo transfer in women with polycystic ovary syndrome undergoing IVF (FreFro-PCOS): study protocol for a multicenter, prospective, randomized controlled clinical trial
Shi Y, Wei D, Liang X, Sun Y, Liu J, Cao Y, Zhang B, Legro RS, Zhang H, Chen ZJ. Live birth after fresh embryo transfer vs elective embryo cryopreservation/frozen embryo transfer in women with polycystic ovary syndrome undergoing IVF (FreFro-PCOS): study protocol for a multicenter, prospective, randomized controlled clinical trial. Trials 2014, 15: 154. PMID: 24885793, PMCID: PMC4022358, DOI: 10.1186/1745-6215-15-154.Peer-Reviewed Original ResearchConceptsFrozen-thawed embryo transferElective embryo cryopreservationFresh embryo transferLive birth rateEmbryo transferPCOS patientsPregnancy complicationsOocyte retrievalClinical trialsEmbryo cryopreservationMethods/designThis studyInfertile PCOS patientsClinical pregnancy ratePolycystic ovary syndromeFrozen embryo transferIntracytoplasmic sperm injectionBirth rateOvary syndromePregnancy outcomesPrimary outcomeAbnormal implantationPregnancy lossParallel groupPregnancy rateGroup B