E.K. VALEEV, S.V. OGURTSOV, I.E. VALEEV, I.A. SHULMAN Republic Clinical Hospital of the MH of RT, 138 Orenburskiy Trakt, Kazan, Russian Federation, 420064  Valeev E.K. — D. Med. Sc., Chief Researcher, tel. (843) 296-88-52, e-mail: [email protected] Ogurtsov S.V. ― neurosurgeon, tel. +7-917-853-95-86, e-mail: [email protected] Valeev I.E. ― Cand. Med. Sc., neurosurgeon, tel. (843) 296-88-52, e-mail: […]

A.A. SHULMAN1, A.A. EREMEEV2, E.K. VALEEV1, I.A. SHULMAN1, A.M. EREMEEV2 1Republic Clinical Hospital of the MH of RT, 138 Orenburgskiy Trakt, Kazan, Russian Federation, 420064 2Kazan (Volga region) Federal University, 18 Kremlevskaya St., Kazan, Russian Federation, 420000 Shulman A.A. — Senior Researcher of Research Department, tel.: (843) 237-34-25, e-mail: [email protected] Eremeev A.A. — Cand. Biol. […]