Smith, Laura P Risk of ectopic pregnancy following day-5 embryo transfer compared with day-3 transfer. [electronic resource] - Reproductive biomedicine online Oct 2013 - 407-13 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1472-6491 Standard No.: 10.1016/j.rbmo.2013.06.015 doi Subjects--Topical Terms: Embryo ImplantationEmbryo Transfer--methodsFemaleFertilization in VitroHumansIncidenceOdds RatioPregnancyPregnancy, Ectopic--epidemiologyRetrospective StudiesRisk AssessmentTime Factors