Velamentous cord insertion caused by oblique implantation after in vitro fertilization and embryo transfer.

J Obstet Gynecol Res 37 (2011) - 1698-1701p

Junichi Hasegawa, Shinji Iwasaki, Ryu Matuoka, Kiyotake Ichizuka, Akihiko Sekizawa, Takasi Okai