[Distribution of digestive organ diseases among preschool children].
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D005767:Gastrointestinal Diseases / Q000453:epidemiology* / Q000235:genetics; D006801:Humans; D012426:Russia; D014505:Urban Population
O rasprostranennosti bolezneĭ organov pishchevareniia u deteĭ doshkol'nogo vozrasta.