Incompetence of the internal os. Report of a case.
D000028:Abortion, Induced / Q000517:prevention & control*; D000022:Abortion, Spontaneous; D035843:Biomedical Research; D002584:Cervix Uteri; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications
ABORTION/prevention and control; CERVIX UTERI/in pregnancy; PREGNANCY/complications