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2. Suction versus conventional curettage in incomplete abortion. A randomised controlled trial;Verkuyl;South African Medical Journal,1993
3. Management of incomplete abortion as an outpatient procedure;Allen;Central Afican Journal of Medicine,1971
4. A comparative study of metal and plastic (Karman) cannulae for first trimester abortion by suction curettage;Antonovski;International Journal of Gynecology & Obstetrics,1975
5. Vacuum aspiration with the IPAS modified gynecologic syringe;Balogh;Contraception,1983