Boyarskaya, L. N., Ivanova К. A., L. V. Kravets, and Levchuk Т. О. 2014. “Peculiarities of Heart Rate Variability in Children With Gastroesophageal Reflux Disease”. Zaporozhye Medical Journal 16 (2). https://doi.org/10.14739/2310-1210.2014.2.25414.