2[3]Reshetnikova OS,Burton GJ,Miloranov AP,et al.Increased incidence of placental chorioangioma in high - altitude pregnancies:hypobaric hypoxia as a possible etidogictor.Am J Obstet Gynecol,1996,174:556-557
3[6]Quintero RA,Reich H,RomeroR,et al.In utero endoscopic de - vascularization of a large chorioangioma.Ultrasound Obstet Gynecol,1996,8:47-48