Cervical insufficiency.
D000026:Abortion, Habitual / Q000209:etiology; D000033:Abortion, Threatened / Q000517:prevention & control; D005260:Female; D005313:Fetal Death / Q000209:etiology; D006801:Humans; D011247:Pregnancy; D011372:Progestins / Q000627:therapeutic use; D002577:Uterine Cervical Diseases / Q000175:diagnosis / Q000601:surgery
D011372:Progestins