Safety measures Prevention 299 Food 184 Security measures 110 Nuclear power plants 103 Radiation 100 Aeronautics 90 more ... Medical errors 85 Health aspects 80 Quality control 80 Food industry and trade 79 Safety regulations 74 Risk assessment 71 Government policy 70 Medical care 70 Design and construction 69 Patients 67 Health and hygiene 66 Management 64 Environmental aspects 56 Law and legislation 55 Industrial safety 54 Accidents 51 History 51 Hazardous substances 50 Chemicals 47 Emergency management 45 Internet 45 Schools 45 Transportation 45 less ...