THE SHIRODKAR OPERATION.
D000028:Abortion, Induced; D000022:Abortion, Spontaneous; D000033:Abortion, Threatened; D023802:Cerclage, Cervical; D002584:Cervix Uteri; D005260:Female; D006801:Humans; D011247:Pregnancy; D013514:Surgical Procedures, Operative
ABORTION, THREATENED; CERVIX UTERI; PREGNANCY; SURGERY, OPERATIVE