G.S. MASKOVA¹, N.L. TCHERNAYA¹, E.V. SHUBINA¹, S.V. ALEKSANDROVA²  ¹Yaroslavl State Medical Academy, 5 Revolutsionnaya St., Yaroslavl, Russian Federation, 150000 ²Children’s Polyclinic № 5, 20 Mashinostroiteley St., Yaroslavl, Russian Federation, 150055 Маskova G. S. — Cand. Med. Sc., Associate Professor of the Department of Polyclinic Pediatrics, tel. +7-910-816-46-87, е-mail: maskovags@mail.ru Tchernaya N. L. — D. Med. […]