For citations:
Belmer S.V., Volynets G.V., Gorelov A.V., Gurova M.M., Zvyagin A.A., Kornienko E.A., Novikova V.P., Pechkurov D.V., Privorotskiy V.F., Tyazheva A.A., Fayzullina R.А., Khavkin A.I., Erdes S.I. Functional digestive disorders in children. Guidelines of the Society of Pediatric Gastroenterologists, Hepatologists and Nutritionists. Part 2. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2020;65(5):100-111. (In Russ.) https://doi.org/10.21508/1027-4065-2020-65-5-100-111