The place of elective cerclage operation for cervical incompetence during pregnancy.
D000022:Abortion, Spontaneous / Q000517:prevention & control*; D000293:Adolescent; D000328:Adult; D002584:Cervix Uteri / Q000601:surgery*; D005260:Female; D006801:Humans; D008722:Methods; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D012189:Retrospective Studies; D002581:Uterine Cervical Incompetence / Q000601:surgery*