Lead challenges China's children.
D002648:Child; D002669:Child Welfare; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D004781:Environmental Exposure; D004785:Environmental Pollutants / Q000009:adverse effects; D006801:Humans; D015994:Incidence; D007221:Industry; D007854:Lead / Q000097:blood*; D007855:Lead Poisoning / Q000453:epidemiology*; D014505:Urban Population; D001335:Vehicle Emissions
D004785:Environmental Pollutants; D001335:Vehicle Emissions; D007854:Lead