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

Aleksei V. Andrianov - Junior Researcher of the Department of Pathology of the Upper Respiratory Tract, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech.

9, Bronnitskaya St., St Petersburg, 190013

M. V. Drozdova
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Marina V. Drozdova - Dr. Sci. (Med.), Leading Researcher, Department of Pathology of the Upper Respiratory Tract, Head of the Department of Reconstructive Surgery, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech.

9, Bronnitskaya St., St Petersburg, 190013

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

Yuliya S. Preobrazhenskaya - Cand. Sci. (Med.), Researcher at the Department of Diagnosis and Treatment of Hearing Disorders, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech.

9, Bronnitskaya St., St Petersburg, 190013