1. Cervical cerclage: an aggressive approach to threatened or recurrent pregnancy wastage;Crombleholme;Am J Obstet Gynecol,1983
2. Comparison of success and morbidity in cervical cerclage procedures;Harger;Obstet Gynecol,1980
3. Editorial: The Shirodkar Stitch;Lancet,1977
4. Premature cervical dilatation and the McDonald cerclage;Smith;Obstet Gynecol,1969
5. Cervical incompetence: diagnosis and outcome;Barford;Obstet Gynecol,1984