T. G. Markova
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech; Sverzhevsky Scientific Research Clinical Institute of Otorhinolaryngology; Russian Medical Academy of Continuous Professional Education
Russian Federation

Tatiana G. Markova, Dr. Sci. (Med.), Leading Researcher of the Department of Diagnostics and Rehabilitation of Hearing Impairments, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech; Leading Researcher, Sverzhevsky Scientific Research Clinical Institute of Otorhinolaryngology; Professor of the Department of Surdology, Russian Medical Academy of Continuous Professional Education

9, Bronnitskaya St., St Petersburg, 190013,

18a, Bldg. 2, Zagorodnoe Shosse, Moscow, 117152,

2/1, Bldg. 1, Barrikadnaya St., Moscow, 125993

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

Serafima B. Sugarova, Cand. Sci. (Med.), Head of the Department of Diagnostics and Rehabilitation of Hearing Disorder

9, Bronnitskaya St., St Petersburg, 19001

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

Yuliya S. Korneva, Postgraduate Student of the Department of Diagnostics and Rehabilitation of Hearing Impairment

9, Bronnitskaya St., St Petersburg, 19001

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

Grigoriy V. Ivanov, Otorhinolaryngology Clinical Resident

9, Bronnitskaya St., St Petersburg, 19001