title: The Karman catheter: a preliminary evaluation as an instrument for termination of pregnancies up to twelve weeks of gestation.
mesh_terms: D000028:Abortion, Induced; D002404:Catheterization / Q000295:instrumentation*; D003475:Curettage; D005069:Evaluation Studies as Topic; D005113:Extraction, Obstetrical / Q000295:instrumentation*; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D013997:Time Factors