For citations:
Livzan M.A., Gaus O.V., Turchaninov D.V., Popello D.V. Abdominal Pain Syndrome in Youth: Prevalence and Risk Factors. Experimental and Clinical Gastroenterology. 2019;1(10):12-17. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-170-10-12-17
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