1. Incidence, trends and risks of ectopic pregnancy in a population of women;Westrom;Br Med J,1981
2. Ectopic pregnancy—United States, 1981-1983;MMWR,1986
3. Ectopic pregnancies—United States, 1979-1980;MMWR,1984
4. Fertility after conservative surgery in tubal pregnancy;Ploman;Acta Obstet Gynecol Scand,1960
5. The conservative surgical management of unruptured ectopic pregnancy;DeCherney;Obstet Gynecol,1979