R.P. GUSLYAKOVA, R.Kh. YAGUDIN, L.I. RYBKIN Republican clinical hospital of the MH of RT, 138 Orenburgskiy Trakt, Kazan, Russian Federation, 420064 Guslyakova R.P. — Deputy Chief Doctor, tel. (843) 237-34-19, e-mail: Raisa.Guslyakova@tatar.ru Yagudin R.Kh. — D. Med. Sc., Cand. Econ. Sc., Associate Professor, Deputy Chief Physician for Science, Development and Organizational and Methodological Work, tel. […]