I. M. Kirichenko
Peoples’ Friendship University of Russia; International Medical Center On Clinics
Russian Federation

Irina M. Kirichenko, Dr. Sci. (Med.), Professor, Department of Otorhinolaryngology of the Medical Institute, Peoples' FUR; Head of the Department of Otorhinolaryngology, International MC 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
International Medical Center On Clinics
Russian Federation

Natalya S. Kozlova, Otorhinolaryngologist.

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