Midforceps operations at the University of Alberta Hospital (1965-1967).
D001724:Birth Weight; D002585:Cesarean Section; D005113:Extraction, Obstetrical / Q000009:adverse effects / Q000401:mortality; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D009772:Obstetrical Forceps; D011247:Pregnancy