For citations:

Spasova T.E., Khitrikheev V.E., Batudaeva T.I., Soktoeva B.V. RISK FACTORS FOR EXTRAESOPHAGEAL SYMPTOMS OF GASTROESOPHAGEAL REFLUX DISEASE. Acta Biomedica Scientifica. 2017;2(6):17-20. (In Russ.) https://doi.org/10.12737/article_5a0a7e8b546824.43326346