Emergency management 34 Emergency medical services 33 Medical emergencies 21 Emergencies 19 Emergency medicine 15 War and emergency powers 14 Disaster relief 12 Handbooks, manuals, etc 9 Congresses 8 Hospitals 8 Assistance in emergencies 7 Emergency nursing 7 Pediatric emergencies 7 Emergency housing 6 First aid in illness and injury 6 Management 6 Planning 6 Safety measures 6 Ambulance service 5 Critical care 5 Emergency medical technicians 5 Emergency service 5 Standards 5 Critical care medicine 4 Disasters 4 Emergency medical personnel 4 Health and hygiene 4 History 4 Prevention 4 Public welfare 4