The physiology and clinical significance of the uterine isthmus. I. The two-stage intrauterine ballon in the diagnosis and treatment of cervical incompetence.
D000028:Abortion, Induced / Q000517:prevention & control*; D000022:Abortion, Spontaneous; D002584:Cervix Uteri / Q000737:chemistry*; D005260:Female; D006801:Humans; D011247:Pregnancy; D002581:Uterine Cervical Incompetence
ABORTION/prevention and control; CERVIX UTERI/chemistry