Pollution and health risks.
D000397:Air Pollution; D003141:Communicable Diseases; D003906:Developing Countries; D004787:Environmental Pollution / Q000009:adverse effects*; D015386:Hazardous Substances / Q000009:adverse effects; D006801:Humans; D011634:Public Health; D014876:Water Pollution
D015386:Hazardous Substances