1. Vasa praevia;Torrey;Am J Obstet Gynecol,1952
2. Velamentous insertion of the umbilical cord;Kouyoumdjian;Obstet Gynecol,1980
3. Antepartum bleeding due to injury of velamentous placental vessels;Vago;Obstet Gynecol,1962
4. Vasa praevia, antepartum diagnosis;Curl;Obstet Gynecol,1968
5. The diagnosis of a vas praevium by amnioscopy;Barham;Med J Aust,1968