O. A. Pivovarova
Federal State University of Education
Russian Federation

Oksana A. Pivovarova, Dr. Sci. (Med.), Professor, Department of Internal Medicine 
Author contributions: concept and design development, data collection.

10A, st. Radio, building 2, Moscow, 105005

D. A. Kulikov
Federal State University of Education; N.A. Semashko National Research Institute of Public Health
Russian Federation

Dmitriy A. Kulikov, Dr. Sci. (Med.), Docent, Professor Department of Fundamental Medical Disciplines 
Author contributions: concept and design development.

10A, st. Radio, building 2, Moscow, 105005;
12-1, Vorontsovo Pole str., Moscow, 105064

A. A. Kotova
Federal State University of Education
Russian Federation

Alevtina A. Kotova, Cand. Sci. (Med.), Associate Professor, Department of Internal Medicine 
Author contribution: formulating the key findings of the study.

10A, st. Radio, building 2, Moscow, 105005

E. G. Bliznyuk
Federal State University of Education
Russian Federation

Elena G. Bliznyuk, Assistant Professor, Department of Fundamental Medical Disciplines 
Author contribution: reviewing critical intellectual content.

10A, st. Radio, building 2, Moscow, 105005

S. N. Ionov
Federal State University of Education
Russian Federation

Stanislav N. Ionov, Dr. Sci. (Biol.), Professor, Department of Therapy 
Author contribution: justification of the manuscript.

10A, st. Radio, building 2, Moscow, 105005

A. V. Maksimov
Federal State University of Education
Russian Federation

Aleksandr V. Maksimov, Dr. Sci. (Med.), Acting Dean of the Faculty of Medicine, Docent, Head of the Department of Fundamental Medical Disciplines 
Author contribution: final approval for publication of the manuscript.

10A, st. Radio, building 2, Moscow, 105005