INCOMPETENT CERVICAL OS--A CONTROVERSIAL ENTITY.
D000026:Abortion, Habitual; D000028:Abortion, Induced; D000022:Abortion, Spontaneous; D002584:Cervix Uteri; D005260:Female; D006801:Humans; D011247:Pregnancy; D013514:Surgical Procedures, Operative
ABORTION, HABITUAL; CERVIX UTERI; SURGERY, OPERATIVE