The incompetent cervix: a 1982 update.
D000022:Abortion, Spontaneous / Q000517:prevention & control; D002584:Cervix Uteri / Q000002:abnormalities / Q000293:injuries / Q000601:surgery; D005260:Female; D006801:Humans; D010570:Pessaries; D011247:Pregnancy; D013536:Suture Techniques; D002581:Uterine Cervical Incompetence / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy