S. V. Ryazantsev
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech; North-Western State Medical University named after I.I. Mechniko
Russian Federation

Sergey V. Ryazantsev - Dr. Sci. (Med.), Professor, Deputy Director for Scientific Work, Saint Petersburg RI of Ear, Throat, Nose and Speech; Professor of the Department of ENT Diseases, North-Western SMU named after I.I. Mechniko.

9, Bronnitskaya St., St Petersburg, 190013; 41, Kirochnaya St., St Petersburg, 191015

S. S. Vysockaya
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Svetlana S. Vysockaya - Deputy Head of the Organizational and Methodological Department, Otorhinolaryngologist.

9, Bronnitskaya St., St Petersburg, 190013

A. V. Chernoivan
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Alexey V. Chernoivan - Deputy Chief Physician for Outpatient Work, Head of the Clinical and Diagnostic Center.

9, Bronnitskaya St., St Petersburg, 190013

A. M. Korkmazov
South Ural State Medical University
Russian Federation

Arsen M. Korkmazov - Cand. Sci. (Med.), Associate Professor of the Department of Otorhinolaryngology.

64, Vorovskiy St., Chelyabinsk, 454092

A. A. Aslambekova
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Anzhela A. Aslambekova - Clinical Resident.

9, Bronnitskaya St., St Petersburg, 190013