N. A. Lebedeva
Medical Institute M.K.Ammosov NEFU
Russian Federation

Lebedeva Natalya Afanasyevna – M.D., Ph.D., associate professor

M. A. Diab Hassan
National Medical Research Center
Russian Federation

Diab Hassan Mohamad Ali – M.D., Ph.D., professor Otorhinolaryngological

A. S. Machalov
National Medical Research Center
Russian Federation

Machalov Anton Sergeevich – M.D., Ph.D., the Head of Audiology, Cochlear Implantation and Auditory rehabilitation department of Otorhinolaryngological

I. I. Gogolev
RH1 NCM
Russian Federation

Gogolev Innokentiy Ivanovich – M.D., the Head of ENT department

N. R. Ilyina
RH1 NCM
Russian Federation

Ilyina Nadezhda Romanovna – M.D., the Head of Speech center

D. S. Tomin
Medical Institute M.K.Ammosov NEFU
Russian Federation

Tomin Dmitriy Sergeevich – ENT resident

V. V. Karpov
Medical Institute M.K.Ammosov NEFU
Russian Federation

Karpov Vasiliy Vasilevich – ENT resident