I. M. Kirichenko
Peoples’ Friendship University of Russia; Он Клиник на Новом Арбате
Russian Federation

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

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

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

V. I. Popadyuk
Peoples’ Friendship University of Russia
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

N. S. Kozlova
Peoples’ Friendship University of Russia; Он Клиник на Новом Арбате
Russian Federation

Natalya S. Kozlova, Аssistant of the Department of Otorhinolaryngology, Peoples’ Friendship University of Russia; Otorhinolaryngologist International Medical Center On Clinics

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

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

A. I. Chernolev
Peoples’ Friendship University of Russia
Russian Federation

Anna I. Chernolev, Cand. Sci. (Med.), Associate Professor of the Department of Otorhinolaryngology

6, Miklukho-Maklai St., Moscow, 117198