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

Dr. Sci. (Med.), Professor, Honored Doctor of Russia, Director, 

9, Bronnitskaya St., St Petersburg, 190013

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

Dr. Sci. (Med.), Leading Researcher, Department for Development and Implementation of High-Tech Treatment Methods, Head of the Department of Reconstructive Surgery, 

9, Bronnitskaya St., St Petersburg, 190013

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

Dr. Sci. (Med.), Professor, Deputy Director for Research, 

9, Bronnitskaya St., St Petersburg, 190013

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

Cand. Sci. (Med.), Researcher, Department of Diagnostics and Treatment of Hearing Disorders,

9, Bronnitskaya St., St Petersburg, 190013

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

Junior Researcher, Organizational and Methodological Department, 

9, Bronnitskaya St., St Petersburg, 190013