N.M. GRUBER, E.K. VALEYEV, V.G. DERBYSHEVA, I.E. VALEYEV Republican Clinical Hospital of the Ministry of Health of the Republic of Tatarstan, 138 Orenburgskiy Trakt, Kazan, Russian Federation, 420064  Gruber N.M. — PhD (Biology), Leading Researcher of the Research Department, tel. (843) 237-35-23, e-mail: [email protected] Valeyev E.K. — D. Med. Sc., Chief Researcher of Scientific-Research Department, tel. +7-987-296-88-52, […]