M. A. Livzan
Federal State Educational Establishment of Higher Education Omsk State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Maria A. Livzan, D. Sci. (Med.), Professor, Rector, Head of the Department of Faculty Therapy, Occupational Diseases, 12 Lenina street, 644043 Omsk, Russia

O. V. Gaus
Federal State Educational Establishment of Higher Education Omsk State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Olga V. Gaus, Cand. Sci. (Med.), Associate Professor of the Department of Faculty Therapy, Occupational Diseases, 12 Lenina street, 644043 Omsk, Russia

M. V. Kolbina
Federal State Educational Establishment of Higher Education Omsk State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Marina V. Kolbina, Cand. Sci. (Med.), Associate Professor of the Department of Faculty Therapy, Occupational Diseases, 12 Lenina street, 644043 Omsk, Russia

F. Zh. Karasaeva
Federal State Educational Establishment of Higher Education Omsk State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Firuza Zh. Karasaeva, clinical resident of the Department of Faculty Therapy, Occupational Diseases, 12 Lenina street, 644043 Omsk, Russia

O. A. Ratnikova
City Hospital No. 17
Russian Federation

Oksana A. Ratnikova, gastroenterologist, 99 Space avenue, 644076 Omsk, Russia