Chronic defects among urban school children.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D003731:Dental Caries / Q000453:epidemiology; D004427:Ear Diseases / Q000453:epidemiology; D006801:Humans; D007182:Income; D007194:India; D008297:Male; D009017:Morbidity; D009748:Nutrition Disorders / Q000453:epidemiology; D014069:Tonsillitis / Q000453:epidemiology; D014141:Trachoma / Q000453:epidemiology; D014786:Vision Disorders / Q000453:epidemiology