L. A. Lichman
Samara State Medical University
Russian Federation

Leonid A. Lichman, Cand. Sci. (Med.), Associate Professor of the Department of Hospital Surgery

89, Chapaevskaya St., Samara, 443089, Russia 

S. E. Katorkin
Samara State Medical University
Russian Federation

Sergei E. Katorkin, Dr. Sci. (Med.), Professor, Head of the Department and Clinic of Hospital Surgery

89, Chapaevskaya St., Samara, 443089, Russia 

P. S. Andreev
Samara State Medical University
Russian Federation

Pavel S. Andreev, Cand. Sci. (Med.), Associate Professor, Head of the Department of Colorectal Surgery, Clinic of Hospital Surgery, Associate Professor of the Department of Hospital Surgery

89, Chapaevskaya St., Samara, 443089, Russia 

O. E. Davydova
Samara State Medical University
Russian Federation

Olga E. Davydova, Cand. Sci. (Med.), Assistant of the Department of Hospital Surgery

89, Chapaevskaya St., Samara, 443089, Russia