E. A. Bykhanova
Krasnoyarsk State Medical University named after Professor V. F. Voyno-Yasenetsky; Regional Clinical Hospital No. 2
Russian Federation

Elena A. Bykhanova - Resident of the Department of Hospital Therapy and Immunology with the course of professional development; General Practitioner of Polyclinic No. 2 
Author's contribution: author of the idea, writing the working version of the manuscript, responsibility for the integrity of all parts of the article.

1, Partizana Zheleznyaka str., Krasnoyarsk, 660022;
43, Karl Marx St., Krasnoyarsk, 660049

T. A. Garkusha
Krasnoyarsk State Medical University named after Professor V. F. Voyno-Yasenetsky; Krasnoyarsk Regional Pathological Anatomy Bureau
Russian Federation

Tat'yana A. Garkusha - Assistant of the Department of Pathological Anatomy named after Professor P.G. Podzolkov; pathologist 
Author's contribution: author of the idea, writing the working version of the manuscript, preparing illustrations.

1, Partizana Zheleznyaka str., Krasnoyarsk, 660022;
3D, Partizana Zheleznyaka str., Krasnoyarsk, 660022

M. N. Kuznetsov
Krasnoyarsk State Medical University named after Professor V. F. Voyno-Yasenetsky; Clinical hospital "RZD-Medicine"
Russian Federation

Mikhail N. Kuznetsov - Cand. Sci. (Med.), Associate Professor of the Department of General Surgery named after prof. M.I. Gulman; Head of the Surgical Department No. 2 
Author's contribution: author of the idea, writing the working version of the manuscript, preparing illustrations.

1, Partizana Zheleznyaka str., Krasnoyarsk, 660022;
47, Lomonosov st., Krasnoyarsk, 660058

I. V. Demko
Krasnoyarsk State Medical University named after Professor V. F. Voyno-Yasenetsky
Russian Federation

Irina V. Demko - Dr. Sci. (Med.), Professor, Head of the Department of Hospital Therapy and Immunology with a Course in Postgraduate Education; Head of the Pulmonary Allergology Center, Krasnoyarsk Regional Clinical Hospital No. 2. 
Author's contribution: scientific consultant, editing the text of the article.

1, Partizana Zheleznyaka str., Krasnoyarsk, 660022

N. I. Kondrashova
Regional Clinical Hospital No. 2
Russian Federation

Natal'ya Ivanovna Kondrashova - Head of Polyclinic No. 2 
Author's contribution: collection and processing of material, editing the text of the article.

43, Karl Marx St., Krasnoyarsk, 660049

O. T. Oleynikova
Regional Clinical Hospital No. 2
Russian Federation

Ol'ga T. Oleynikova - Head of the Therapy Department No. 2 of the Polyclinic No. 2 
Author's contribution: collection and processing of material, editing of the article text.

43, Karl Marx St., Krasnoyarsk, 660049

E. S. Khramikhina
Krasnoyarsk State Medical University named after Professor V. F. Voyno-Yasenetsky
Russian Federation

Elizaveta S. Khramikhina - Student of the Faculty of Medicine 
Author's contribution: collection and processing of material, literature analysis.

1, Partizana Zheleznyaka str., Krasnoyarsk, 660022

I. S. Krasnoramenskaya
Regional Clinical Hospital No. 2
Russian Federation

Irina S. Krasnoramenskaya - Therapist of Polyclinic No. 2 
Author's contribution: collection and processing of material, literature analysis, preparation of illustrations.

43, Karl Marx St., Krasnoyarsk, 660049

V. V. Deulina
Krasnoyarsk State Medical University named after Professor V. F. Voyno-Yasenetsky
Russian Federation

Vera V. Deulina - Cand. Sci. (Med.), Associate Professor of the Department of General Surgery named after prof. M.I. Gulman 
Author's contribution: collection and processing of material, literature analysis.

1, Partizana Zheleznyaka str., Krasnoyarsk, 660022

N. S. Shtoppel'
Krasnoyarsk State Medical University named after Professor V. F. Voyno-Yasenetsky
Russian Federation

Nataliya S. Shtoppel' - Cand. Sci. (Med.), Associate Professor of the Department of General Surgery named after prof. M.I. Gulman 
Author's contribution: collection and processing of material, literature analysis.

1, Partizana Zheleznyaka str., Krasnoyarsk, 660022

A. E. Khardikova
Clinical hospital "RZD-Medicine" Krasnoyarsk
Russian Federation

Aleksandra E. Khardikova - Proctologist of the surgical department No. 2 
Author's contribution: collection and processing of material, literature analysis, preparation of illustrations.

47, Lomonosov st., Krasnoyarsk, 660058