title: Cervical resistance in patients with previous spontaneous mid-trimester abortion.
mesh_terms: D000026:Abortion, Habitual / Q000503:physiopathology; D000022:Abortion, Spontaneous / Q000209:etiology / Q000503:physiopathology*; D002584:Cervix Uteri / Q000503:physiopathology*; D004106:Dilatation; D005260:Female; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D002581:Uterine Cervical Incompetence / Q000150:complications / Q000503:physiopathology