The use of the vacuum extractor.
D001720:Birth Injuries / Q000209:etiology; D002543:Cerebral Hemorrhage / Q000209:etiology; D005113:Extraction, Obstetrical / Q000295:instrumentation*; D005260:Female; D005316:Fetal Distress / Q000209:etiology; D005311:Fetal Hypoxia / Q000209:etiology; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007567:Jaundice, Neonatal / Q000209:etiology; D011247:Pregnancy; D012166:Retinal Hemorrhage / Q000209:etiology; D012535:Scalp / Q000293:injuries; D014620:Vacuum Extraction, Obstetrical / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods