A. V. Gurov
Pirogov Russian National Research Medical University; Sverzhevsky Scientific Research Clinical Institute of Otorhinolaryngology
Russian Federation

Alexander V. Gurov, Dr. Sci. (Med.), Professor of the Department of Otorhinolaryngology named after Acad. B.S. Preobrazhensky, Faculty of Medicine, Pirogov Russian National Research Medical University; Senior Researcher, Department of Epidemiology, Methodology and Scientific Forecasting, Sverzhevsky Scientific Research Clinical Institute of Otorhinolaryngology

1, Ostrovityanov St., Moscow, 117997, Russia; 
18a, Bldg. 2, Zagorodnoe Shosse, Moscow, 117152, Russia

M. A. Yushkina
Pirogov Russian National Research Medical University; Sverzhevsky Scientific Research Clinical Institute of Otorhinolaryngology
Russian Federation

Marina A. Yushkina, Cand. Sci. (Med.), Associate Professor of the Department of Otorhinolaryngology named after Acad. B.S. Preobrazhensky, Faculty of Medicine, Pirogov Russian National Research Medical University; Associate Professor of the Educational Department, Sverzhevsky Scientific Research Clinical Institute of Otorhinolaryngology

1, Ostrovityanov St., Moscow, 117997, Russia; 
18a, Bldg. 2, Zagorodnoe Shosse, Moscow, 117152, Russia

A. V. Muzhichkova
Pirogov Russian National Research Medical University; Sverzhevsky Scientific Research Clinical Institute of Otorhinolaryngology
Russian Federation

Аnna V. Muzhichkova, Cand. Sci. (Med.), Assistant of the Department of Otorhinolaryngology Named after Acad. B.S. Preobrazhensky, Faculty of Medicine, Pirogov Russian National Research Medical University; Associate Professor of the Educational Department, Sverzhevsky Scientific Research Clinical Institute of Otorhinolaryngology

1, Ostrovityanov St., Moscow, 117997, Russia; 
18a, Bldg. 2, Zagorodnoe Shosse, Moscow, 117152, Russia