N.V. RYLOVA1, A.V. ZHOLINSKIY2 1Kazan State Medical University, Kazan 2Federal Scientific-Clinical Centre of Sports Medicine and Rehabilitation, Moscow   Contact: Rylova N.V. ― MD, Professor of the Department of Hospital Pediatrics with a course of Polyclinical Pediatrics Address: 49 Butlerov Str., Kazan, Russian Federation, 420012, e-mail: rilovanv@mail.ru There are many evidences that high (optimal) concentrations of […]