1. The contribution of low birth weight to infant mortality and childhood morbidity;McCormack;N Engl J Med,1985
2. Cervical stitch (cerclage) for preventing pregnancy loss in women;Drakeley;Cochrane Database Syst Rev,2003
3. A new method of operative treatment for habitual abortion in the second trimester of the pregnancy;Shirodkar;Antiseptic J,1955
4. Suture of the cervix for inevitable miscarriage;McDonald;J Obstet Gynaecol Br Emp,1957
5. Transabdominal cervico uterine cerclage during pregnancy for the treatment of cervical incompetency;Benson;Obstet Gynecol,1965