[Incompetence of uterine cervix in pregnancy in the light of personal observations].
D000033:Abortion, Threatened / Q000601:surgery*; D000328:Adult; D005260:Female; D006801:Humans; D011247:Pregnancy; D002577:Uterine Cervical Diseases / Q000601:surgery*
Niewydolność szyjki macicy w czasie ciazy w świetle wlasnych spostrzezeń.