O. P. Frolovа
I.M. Sechenov First Moscow State Medical University (Sechenov University); Pirogov Russian National Research Medical University
Russian Federation

Olga P. Frolova - Professor of Perelman Phthisiopulmonology and Thoracic Surgery Department.

Build. 2, 4, Dostoevsky St., Moscow, 127473

O. V. Butylchenko
I.M. Sechenov First Moscow State Medical University (Sechenov University)
Russian Federation

Olga V. Butylchenko - Associate Professor of Perelman Phthisiopulmonology and Thoracic Surgery Department.

Build. 2, 4, Dostoevsky St., Moscow, 127473

V. A. Stаkhаnov
Pirogov Russian National Research Medical University
Russian Federation

Vladimir A. Stakhanov - Pirogov Russian National Research Medical University, Head of Phthisiology Department.

26, Sevastopolskiy Drive, Moscow, 117209

L. P. Severovа
I.M. Sechenov First Moscow State Medical University (Sechenov University)
Russian Federation

Lyudmila P. Severova - Clinical Resident of Perelman Phthisiopulmonology and Thoracic Surgery Department.

Build. 2, 4, Dostoevsky St., Moscow, 127473