1. Spontaneous rupture of umbilical cord.;McClintok;Br Med J,1943
2. Spontaneous rupture of the umbilical cord.;Siddall;Am J Obstet Gynecol,1937
3. Spontaneous severance of umbilical cord.;Douglas;Am J Obstet Gynecol,1929
4. Identification of acute transplacental hemorrhage in a low-risk patient as a result of daily counting of fetal movements.;Heise;Mayo Clin Proc,1993
5. Constriction of the umbilical cord by an amniotic band, with fetal compromise illustrated by reverse diastolic flow in the umbilical artery: A case report.;Kanayama;J Reprod Med,1995