Prevention 16 Particles (Nuclear physics) 14 methods 14 prevention & control 13 standards 13 organization & administration 10 Health Policy 9 Mental Health Services 9 therapy 9 AIDS (Disease) 7 Mental health services 7 Nuclear physics 7 Treatment 7 World health 7 Cancer 6 Colliders (Nuclear physics) 6 Medical policy 6 adverse effects 6 diagnosis 6 Child 5 Cosmology 5 Epilepsy 5 Government policy 5 HIV infections 5 Health Planning 5 Health and hygiene 5 Health aspects 5 Medical care 5 Policy Making 5 Public Policy 5