title: Pre-hospital emergency care: situation critical.
mesh_terms: D000068:Accreditation; D000552:Ambulances; D002170:Canada; D004632:Emergency Medical Services / Q000592:standards*; D004634:Emergency Medical Technicians / Q000193:education; D004636:Emergency Service, Hospital / Q000592:standards; D009313:National Health Programs; D013997:Time Factors