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

Aleksandr A. Krivopalov - Dr. Sci. (Med.), Senior Research Associate of Development Department and Introduction High-technology Treatment Mode, St Petersburg Research Institute of Ear, Throat, Nose and Speech.

9, Bronnitskaya St., St Petersburg, 190013.

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

Polina A. Shamkina - Postgraduate Student of Development Department and Introduction High-technology Treatment Mode, St Petersburg Research Institute of Ear, Throat, Nose and Speech.

9, Bronnitskaya St., St Petersburg, 190013.

Ju. E. Stepanova
St Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Julia E. Stepanova - Dr. Sci. (Med.), Assistant Professor, Head of the Department of Pathophysiology of Voice and Speech, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech.

9, Bronnitskaya St., St Petersburg, 190013.

E. E. Koren
St Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Elena E. Koren - Research Officer of the Department of Pathophysiology of Voice and Speech, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech.

9, Bronnitskaya St., St Petersburg, 190013.

T. V. Gotovyakhina
St Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Tatyana V. Gotovyakhina - Cand. Sci. (Med.), Senior Research Officer of the Department of Pathophysiology of Voice and Speech, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech.

9, Bronnitskaya St., St Petersburg, 190013.