V. S. Isachenko
St Petersburg Research Institute of Ear, Throat, Nose and Speech; St Petersburg State University
Russian Federation

Vadim S. Isachenko - Dr. Sci. (Med.), Deputy Chief Physician for Surgery, St Petersburg RI of Ear, Throat, Nose and Speech; Professor of the Department of Otorhinolaryngology and Ophthalmology of Medical Institute, St Petersburg SU.

9, Bronnitskaya St., St Petersburg, 190013; 8A, 21st Liniya Vasilevskogo Ostrova St., St Petersburg, 199106

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

Lev E. Shapovalov - Postgraduate Student.

9, Bronnitskaya St., St Petersburg, 190013

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

Marina V. Drozdova - Dr. Sci. (Med.), Leading Researcher, Department of Pathology of the Upper Respiratory Tract, Head of the Department of Reconstructive Surgery.

9, Bronnitskaya St., St Petersburg, 190013

S. N. Larionova
St Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Sofya N. Larionova - Otorhinolaryngologist of the Pediatric Surgical Department.

9, Bronnitskaya St., St Petersburg, 190013