T.Ya. Korchina - Dr.Sc. (Мed.), Professor, Department of Anesthesiology-Reanimatology, Emergency and Clinical Toxicology, Khanty-Mansiysk State Medical Academy. E-mail: t.korchina@mail.ru V.I. Korchin - Dr.Sc. (Мed.), Professor, Head of Department of Normal and Pathological Physiology, Khanty-Mansiysk State Medical Academy. E-mail: vikhmgmi@mail.ru