00554naa#a2200181#i#450# EN\INFRA-M\bibl\4790 20250121041800.2 2075-4094 20150417b2015####ek#y0engy0150####ca RUS RU The objective criteria of chronic diseases of digestive system in children (literature review) Journal article Moscow INFRA-M Academic Publishing LLC. 2015 0 с. Journal article local Sapozhnikov Vladimir Vorobeva A. naukaru.ru