A.A. BIKTIMIROVA1, N.V. RYLOVA2 1Kazan State Medical Academy, 36 Butlerov St., Kazan, Russian Federation, 420012 2Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012 Biktimirova A.A. — postgraduate student of the Department of Pediatrics with a course of Outpatient Pediatrics, tel. +7-904-662-21-36, e-mail: [email protected] Rylova N.V. — D. Med. Sc., Professor of the […]