K.K. BARANOV1,2, I.M. CHINENOV2, I.V. ZYABKIN2, A.A. PIKHUROVSKAYA1, M.R. BOGOMILSKI1 1Pirogov Russian National Research Medical University, 1 Ostrovityanova Str., Moscow, Russian Federation, 117997 2Russian Children’s Clinical Hospital of Pirogov Russian National Research Medical University, 117 Leninskiy prospekt, Moscow, Russian Federation, 119571  Baranov K.K. ― Cand. Med. Sc., Assistant Lecturer of the Otorhinolaryngology Department of the […]