G. Yu. PORETSKOVA, D. V. PECHKUROV, M.Yu. GAVRYUSHIN, O.V. SAZONOVA, E.N. VORONINA Samara State Medical University of the Ministry of Health of the Russian Federation, 89 Chapaevskaya St., Samara, Russian Federation 443099  Contact details: Poretskova G.Yu. — Cand. Med. Sc., Associate Professor of the Department of Children’s Diseases, e-mail: vra4_pediatr@mail.ru Pechkurov D.V. – D. Med. […]