title: [Comparative studies in twin pregnancies with and without preventive cerclage. 10-years study 1968-77].
mesh_terms: D002584:Cervix Uteri / Q000601:surgery*; D005260:Female; D006801:Humans; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D011272:Pregnancy, Multiple; D002581:Uterine Cervical Incompetence / Q000601:surgery
vernacular_title: Vergleichende Untersuchungen bei Zwillingsschwangerschaften mit und ohne prophylaktische Cerclage. (10-Jahres-Studie 1968-1977).