V. V. Muntean
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation

Muntеan Vаleria V., Postgraduate Student of the Department of Otorhinolaryngology

 6, Miklukho-Maklaya str., Moscow, 117198 

M. V. Nersesyan
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation

Nersesyan Marina V., Dr. of Sci. (Med.), Associate Professor of the Department of Otorhinolaryngology, Medical Institute

 6, Miklukho-Maklaya str., Moscow, 117198 

V. I. Popadyuk
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation

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

 6, Miklukho-Maklaya str., Moscow, 117198