Pirtea, LaurenŢiu Cornel In vitro fertilization represents a risk factor for vasa praevia. [electronic resource] - Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie 2016 - 627-632 p. digital Publication Type: Journal Article; Review ISSN: 2066-8279 Subjects--Topical Terms: Estradiol--metabolismFemaleFertilization in Vitro--adverse effectsHumansPlacenta--abnormalitiesPregnancyPrenatal DiagnosisRisk FactorsVasa Previa--etiology