V. V. Darvin
Surgut State University
Russian Federation

Vladimir V. Darvin, doctor of medical sciences, professor 

628400, Surgut, Lenin str., 1

A. Ya. Ilkanich
Surgut State University
Russian Federation

Andrey Ya. Ilkanich, doctor of medical sciences 

628400, Surgut, Lenin str., 1

M. G. Ryzhikov
Nizhnevartovsk Regional Clinical Hospital
Russian Federation

Mikhail G. Ryzhikov 

628606, Nizhnevartovsk, Lenin str., 18

A. V. Oganian
Nizhnevartovsk Regional Clinical Hospital
Russian Federation

Armen V. Oganian 

628606, Nizhnevartovsk, Lenin str., 18

A. V. Satinov
Nizhnevartovsk Regional Clinical Hospital
Russian Federation

Alexey V. Satinov 

628606, Nizhnevartovsk, Lenin str., 18