A. A. Krivopalov
Saint Petersburg Research Institute of Ear, Throat, Nose and Speech; North-Western State Medical University named after I.I. Mechnikov
Russian Federation

Aleksandr A. Krivopalov, Dr. Sci. (Med.), Head of the Research Department of Upper Respiratory PathoLogy, Saint Petersburg Research Institute of Ear, Throat, Nose and Speech; Associate Professor of the Department of Otorhinolaryngology, North-Western State Medical University named after I.I. Mechnikov;

9, Bronnitskaya St., St Petersburg, 190013;
41, Kirochnaya St., St Petersburg, 191015

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

Polina A. Shamkina, Cand. Sci. (Med.), Researcher of the Research Department of Pathology of the Upper Respiratory Tract

9, Bronnitskaya St., St Petersburg, 190013

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

Alexandra I. Glushchenko, Postgraduate Student of the Research Department of Pathology of the Upper Respiratory Tract

9, Bronnitskaya St., St Petersburg, 190013