1. Ectopic pregnancy;Lemus;Curr Opin Obstet Gynecol,2000
2. Biological Principles and Modern Practice of Obstetrics and Gynecology;Greenhill,1974
3. Angular and interstitial pregnancy;Lancet;Int Surg,1977
4. Interstitial pregnancy;Felmus;Am J Obstet Gynecol,1953
5. Operative gynecology;Telinde,1970