A. V. Andrianov
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Aleksei V. Andrianov, Junior Researcher at the Department of Pathology of the Upper Respiratory Tract,

9, Bronnitskaya St., St Petersburg, 190013, Russia

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

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

9, Bronnitskaya St., St Petersburg, 190013, Russia

S. I. Alekseenko
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech; Children’s City Multidisciplinary Clinical Center of High Medical Technologies named after K.A. Rauhfus; North-Western State Medical University named after I.I. Mechnikov
Russian Federation

Svetlana I. Alekseenko, Dr. Sci. (Med.), Senior Researcher, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech; Head of the ENT Department, Children’s City Multidisciplinary Clinical Center of High Medical Technologies named after K.A. Rauhfus; Associate Professor of the Department of Otorhinolaryngology, NorthWestern State Medical University named after I.I. Mechnikov;

9, Bronnitskaya St., St Petersburg, 190013, Russia; 
8, Ligovsky Ave., St Petersburg, 193036, Russia;
41, Kirochnaya St., St Petersburg, 191015, Russia

A. A. Vasilyeva
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech
Russian Federation

Anastasia A. Vasilyeva, Clinical Resident, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech

9, Bronnitskaya St., St Petersburg, 190013, Russia

D. Yu. Spichak
Children’s City Multidisciplinary Clinical Center of High Medical Technologies named after K.A. Rauhfus
Russian Federation

Dmitry V. Spichak, Otorhinolaryngologist

8, Ligovsky Ave., St Petersburg, 193036, Russia