S.V. MALTSEV1, T.V. MIKHAILOVA1, O.A. KRAVTSOVA2 1Kazan State Medical Academy, 36 Butlerov St., Kazan, Russian Federation, 420012 2Kazan (Volga region) Federal University, Kremlevskaya St., Kazan, Russian Federation, 420008 Maltsev S.V. — D. Med. Sc., Professor, Head of the Department of Pediatrics with a course in Polyclinic Pediatrics, tel. (843) 236-20-84, e-mail: maltc@mail.ru Mikhailova T.V. — Cand. Med. […]