G. G. Gusenbekov
RUDN University
Russian Federation

Gamid G. Gusenbekov, Postgraduate Student of the Department of Otorhinolaryngology of the Medical Institute

6, Miklukho-Maklai St., Moscow, 117198

I. M. Kirichenko
RUDN University; International Medical Center On Clinics
Russian Federation

Irina M. Kirichenko, Dr. Sci. (Med.), Department of Otorhinolaryngology of the Medical Institute, RUDN University; Head of the Department of Otorhinolaryngology of the International Medical Center On Clinics

6, Miklukho-Maklai St., Moscow, 117198,

32, Bldg. 1, Bolshaya Molchanovka St., Moscow, 121069

V. I. Popadyuk
RUDN University
Russian Federation

Valentin I. Popadyuk, Dr. Sci. (Med.), Dean of the Faculty of Postgraduate Education and Head of the Department of Otorhinolaryngology of the Medical Institute

6, Miklukho-Maklai St., Moscow, 117198