Child mortality--nutrition--gastroenteritis--water contamination.
D002648:Child; D002675:Child, Preschool; D003906:Developing Countries; D005714:Gambia; D005759:Gastroenteritis / Q000209:etiology / Q000401:mortality*; D006801:Humans; D009026:Mortality; D009549:Nigeria; D009748:Nutrition Disorders / Q000150:complications*; D014876:Water Pollution