O.I. PIKUZA, E.A. SAMORODNOVA, E.V. VOLYANYUK Kazan State Medical University of the Ministry of Health of the Russian Federation, Kazan  Contact details: Pikuza O.I. — MD, Professor of the Department of Propaedeutics of Children’s Diseases and Faculty Pediatrics Address: 49 Butlerov Str., Kazan, Russian Federation, 420012, tel.: +7-917-390-11-12, e-mail: [email protected] The purpose — to present […]