1. Surgical sterilization surveillance: tubal sterilization 1976–1978,1981
2. Abortion surveillance 1978,1980
3. Mortality and morbidity of abortion;Kestelman;Lancet,1971
4. Trends in therapeutic abortion in San Francisco;Goldstein;Am J Public Health,1972
5. Timing of laparoscopic sterilization in abortion patients;Kwak;Obstet Gynecol,1980