For citations:
Tsukanov V.V., Vasiutin A.V., Tonkikh J.L., Kasparov E.V., Smirnova O.V. Uninvestigated Dyspepsia and Heartburn Overlap Syndrome at Industrial Hub of Eastern Siberia. Russian Journal of Gastroenterology, Hepatology, Coloproctology. 2021;31(4):21-30. (In Russ.) https://doi.org/10.22416/1382-4376-2021-31-4-21-30