For citations:

Shashel V.A., Matalaeva S.Yu. Microelement composition of hair as a marker of comorbid conditions in children with gallstone disease living in ecologically unfavorable territories of the Krasnodar Territory. Experimental and Clinical Gastroenterology. 2020;(1):76-83. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-173-1-76-83