Nutritional surveillance.
D002648:Child; D004812:Epidemiologic Methods; D005523:Food Supply; D006305:Health Status Indicators; D006801:Humans; D006815:Hunger; D009748:Nutrition Disorders / Q000453:epidemiology / Q000209:etiology / Q000628:therapy; D009749:Nutrition Surveys; D009747:Nutritional Physiological Phenomena; D011634:Public Health; D012959:Socioeconomic Factors