V. Y. Rayn
Khanty-Mansiysk State Medical Academy; Clinical Hospital of the Khanty-Mansiysk Autonomous Okrug – Ugra
Russian Federation

 MD, Surgeon, Surgery Department, № 2 

 40, Mira Street, 628011, Khanty-Mansiysk, Russia 

 40, Kalinina Street, 628011, Khanty-Mansiysk, Russia 

M. A. Persidskiy
Clinical Hospital of the Khanty-Mansiysk Autonomous Okrug – Ugra
Russian Federation

 MD, Pathologist, Department of Pathology 

 40, Kalinina Street, 628011, Khanty-Mansiysk, Russia 

V. P. Ionin
Khanty-Mansiysk State Medical Academy
Russian Federation

 MD, DSc, Professor, Head of Department for General and Faculty Surgery 

 40, Mira Street, 628011, Khanty-Mansiysk, Russia 

E. D. Khadieva
Clinical Hospital of the Khanty-Mansiysk Autonomous Okrug – Ugra
Russian Federation

 MD, Phd, Pathologist, Head of Department of Pathology 

 40, Kalinina Street, 628011, Khanty-Mansiysk, Russia