1)Hasegawa J, et al : Improving the accuracy of diagnosing placenta previa on transvaginal ultrasound by distinguishing between the uterine isthmus and cervix : a prospective multicenter observational study. Fetal Diagn Ther 41 : 145-151, 2017
2)Newton ER, et al : The epidemiology and clinical history of asymptomatic midtrimester placenta previa. Am J Obstet Gynecol 148 : 743-748, 1984
3)Grobman WA, et al : Pregnancy outcomes for women with placenta previa in relation to the number of prior cesarean deliveries. Obstet Gynecol 110 : 1249-1255, 2007
4)Society for Maternal-Fetal Medicine Publications Committee : Placenta accreta. Am J Obstet Gynecol 203 : 430-439, 2010
5)Society of Maternal-Fetal(SMFS)Publications Committee, Sinkey RG, et al : #37 : Diagnosis and management of vasa previa. Am J Obstet Gynecol 213 : 615-619, 2015
6)Shainker SA, et al : Special report of the society for maternal-fetal medicine placenta accreta spectrum ultrasound marker task force : Consensus on definition of markers and approach to the ultrasound examination in pregnancies at risk for placenta accreta spectrum. Am J Obstet Gynecol 224 : B2-B14, 2021
7)Society for Maternal-Fetal Medicine(SMFM),Gyamifi-Bannerman C : Society for Maternal-Fetal Medicine(SMFM)consult series#44 : Management of bleeding in the late preterm period. Am J Obstet Gynecol 218 : B2-B8, 2018
8)Hurd WW, et al : Selective management of abruptio placentae : A prospective study. Obstet Gynecol 61 : 467-473, 1983
9)Jaffe MH, et al : Sonography of abruptio placentae. AJR Am J Roentgenol 137 : 1049-1054, 1981
10)Oylese Y, et al : Vasa previa : The impact of prenatal diagnosis on outcomes. Obstet Gynecol 103 : 937-942, 2004