Kahana، B؛ Sheiner، E؛ Levy، A؛ Lazer، S؛ Mazor، M (فبراير 2004). "Umbilical cord prolapse and perinatal outcomes". International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics. ج. 84 ع. 2: 127–32. DOI:10.1016/s0020-7292(03)00333-3. PMID:14871514.
Murphy، DJ؛ MacKenzie، IZ (أكتوبر 1995). "The mortality and morbidity associated with umbilical cord prolapse". British journal of obstetrics and gynaecology. ج. 102 ع. 10: 826–30. DOI:10.1111/j.1471-0528.1995.tb10850.x. PMID:7547741.
Kahana، B؛ Sheiner، E؛ Levy، A؛ Lazer، S؛ Mazor، M (فبراير 2004). "Umbilical cord prolapse and perinatal outcomes". International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics. ج. 84 ع. 2: 127–32. DOI:10.1016/s0020-7292(03)00333-3. PMID:14871514.
Murphy، DJ؛ MacKenzie، IZ (أكتوبر 1995). "The mortality and morbidity associated with umbilical cord prolapse". British journal of obstetrics and gynaecology. ج. 102 ع. 10: 826–30. DOI:10.1111/j.1471-0528.1995.tb10850.x. PMID:7547741.