S.Ya. VOLGINA1, A.Yu. ASANOV2 1Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012 2First Moscow State Medical University named after I.V. Sechenov, 8 Trubetskaya St., building 2, Moscow, Russian Federation, 119048  Volgina S.Ya. — D. Med. Sc., Professor of the Department of Hospital Pediatrics, tel. (843) 556-74-52, e-mail: volgina_svetlana@mail.ru Asanov A.Yu. — D. […]