Hormonal therapy for control of the incompetent os of pregnancy.
D000026:Abortion, Habitual / Q000517:prevention & control*; D002965:Classification; D005260:Female; D006801:Humans; D006908:Hydroxyprogesterones / Q000627:therapeutic use*; D011247:Pregnancy; D002577:Uterine Cervical Diseases / Q000188:drug therapy* / Q000209:etiology / Q000601:surgery
D006908:Hydroxyprogesterones