А.М. ZAKIROVA, S.V. MALTSEV Kazan State Medical University of the Ministry of Health of the Russian Federation For correspondence: Zakirova A.M. – Cand. Med. Sc., Associate Professor of the Department of Children’s Diseases Propaedeutics and Faculty Pediatrics with a course in Children’s Diseases of Therapy Faculty of Kazan State Medical University, 49 Butlerov Str., 420012 Kazan, […]