А.А. TYAZHEVA¹, D.V. PECHKUROV¹, A.A. ROMANOV¹, B.B. STREPNEV², E.V. KOZAREV² ¹Samara State Medical University, 89 Chapaevskaya Str., Samara, Russian Federation 443099 ² Samara Regional Clinical Hospital named after V.D. Seredavin, 159 Tashkentskaya Str., Samara, Russian Federation 443099  Contact details: Tyazheva A.A. — Cand. Med. Sc., Assistant of the Department of Children’s Diseases, tel. (846) 959-45-11, […]