[Closure of the external os of the uterus in preventing habitual abortions and premature labor].
D000026:Abortion, Habitual; D000028:Abortion, Induced / Q000517:prevention & control*; D002584:Cervix Uteri / Q000601:surgery*; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D007752:Obstetric Labor, Premature; D011247:Pregnancy; D014599:Uterus
ABORTION/prevention and control; CERVIX UTERI/surgery; LABOR