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

Sergey V. Ryazantsev, Dr. of Sci. (Med.), Professor, Deputy Director for Research and Coordination Activity

9, Bronnitskaia St., St Petersburg, 190013

A. A. Krivopalov
St Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Aleksandr A. Krivopalov, Dr. of Sci. (Med.), Senior Researcher

9, Bronnitskaia St., St Petersburg, 190013

P. A. Shamkina
St Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Polina A. Shamkina, Postgraduate Student

9, Bronnitskaia St., St Petersburg, 190013

K. A. Lezhneva
St Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Ksenia A. Lezhneva, Resident Physician

9, Bronnitskaia St., St Petersburg, 190013

O. S. Donskaya
Federal State Budgetary Educational Institution of Higher Education “Pavlov First Saint Petersburg State Medical University” of the Ministry of Healthcare of Russian Federation
Russian Federation

Olga S. Donskaya, Cand. of Sci. (Med.), Assistant at the Department of Propedeutics of Dental Diseases

6–8, Lev Tolstoy St., St Petersburg, 197022