title: Descendent migration in vasa previa.
authors.affiliation: Department of Obstetrics and Gynecology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan. hasejun@oak.dti.ne.jp.
authors.forename: Junichi
authors.initials: J
authors.lastname: Hasegawa
authors.affiliation: Department of Obstetrics and Gynecology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
authors.forename: Hiroko
authors.initials: H
authors.lastname: Takita
authors.affiliation: Department of Obstetrics and Gynecology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Arakaki
authors.affiliation: Department of Obstetrics and Gynecology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
authors.forename: Akihiko
authors.initials: A
authors.lastname: Sekizawa
mesh_terms: D005260:Female; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011446:Prospective Studies; D016216:Ultrasonography, Prenatal / Q000379:methods*; D055949:Vasa Previa / Q000000981:diagnostic imaging*
keywords: Amniotic membrane; Migration; Placenta previa; Vasa previa; Velamentous cord insertion