1. Artificial termination of pregnancy, section 1: first trimester abortion by suction curettage;Burnhill,1977
2. Major complications of 20 248 consecutive first trimester abortions;Hodgson;Adv Plann Parent,1975
3. Prophylactic use of tetracycline for first trimester abortions;Hodgson;Obstet Gynecol,1975
4. Ambulatory abortion: experience with 26,000 cases (July 1, 1970, to August 1, 1971);Nathanson;N Engl J Med,1972