Boyarskaya, L.N., Ivanova К.A., Kravets, L.V. and Levchuk Т.О. 2014. Peculiarities of heart rate variability in children with gastroesophageal reflux disease. Zaporozhye Medical Journal. 16, 2 (Jun. 2014). DOI:https://doi.org/10.14739/2310-1210.2014.2.25414.