V. F. Kirichuk  Dr. Sc. (Med.), Professor, Honored Worker of Science, Head of the Department of Normal Physiology n. a. I.A. Chuevsky, Saratov State Medical University n. a. V.I. Razumovsky Russian Ministry of Health  E-mail: normalf@yandex.ru  

O. N. Antipova  Dr. Sc. (Med.), Associate Professor, Professor of the Department of Normal Physiology n. a. I.A. Chuevsky, Saratov State Medical University n.a. V.I. Razumovsky Russian Ministry of Health  E-mail: normalf@yandex.ru  

A.R. Nogerov  Student, Pediatric Faculty, Saratov State Medical University n. a. V.I. Razumovsky Russian Ministry of Health  E-mail: alim_07   @mail.ru  

A.A. Tsymbal  Dr.Sc. (Med.), Associate Professor, Professor of the Department of Pathophysiology, Medical Faculty, Sechenov First Moscow State Medical University, Moscow  E-mail: AA-Tsymbal@yandex.ru  

I.V. Smyshlyaeva  Ph. D. (Med.), Associate Professor, Department of normal physiology n. a. I.A. Chuevsky