Nepal 183 Knowledge 50 Public Health 45 standards 44 Kathmandu 43 prevention & control 43 Health aspects 41 Environmental health 39 Environmental aspects 38 Gezondheid 36 Pollution 36 Quality Control 36 Water 36 Water Microbiology 36 Water Pollution 36 Water Supply 36 Water quality 36 Water quality management 36 Children 28 Prevalence 23 Depression 18 methods 16 Epidemiology 14 HIV/AIDS 14 Women 14 Hypertension 13 Kathmandu Valley 13 Public health 13 Quality of life 12 Anxiety 11