For citations:

Sirchak Ye.S., Stan M.P., Pichkar Y.I., Sirchak S.S. Clinical and endoscopic features of gastroesophageal reflux disease in patients with obesity. Medical alphabet. 2019;2(13):49-51. (In Russ.) https://doi.org/10.33667/2078-5631-2019-2-13(388)-49-51