The crucial hour.
D000402:Airway Obstruction / Q000628:therapy; D002490:Central Nervous System / Q000293:injuries; D002675:Child, Preschool; D004630:Emergencies; D006470:Hemorrhage / Q000628:therapy; D006801:Humans; D007103:Immobilization; D009333:Neck; D010372:Pediatrics; D011030:Pneumothorax / Q000628:therapy; D013997:Time Factors