1. Centers for Disease Control. Ectopic pregnancy in the United States, 1970-1983, CDC surveillance summaries;MMWR,1986
2. Ectopic pregnancy mortality in the United States 1970-1983;Atrash;Obstet Gynecol,1987
3. The conservative surgical management of unruptured ectopic pregnancy;DeCherney;Obstet Gynecol,1979
4. Tubal conservation in ectopic pregnancy: a study of 200 cases;Hallatt;Ant J OBSTET GYNECOL,1986
5. Conservative laparoscopic treatment of 321 ectopic pregnancies;Pouly;Fertil Steril,1986