A.A. NIGMATIYANOVA1, L.I. FEISKHANOVA1, R.Z. ABDRAKIPOV2, R.M. KHASANOV1,2 1Kazan State Medical University, 49 Butlerov Str., Kazan, Russian Federation, 420012 2Republican Clinical Hospital of the MH of RT, 138 Orenburgskiy Trakt, Kazan, Russian Federation, 420064  Nigmatiyanova A.A. ― postgraduate student of the Department of Hospital Therapy, tel. +7-987-277-60-39, e-mail: anzilya-s@yandex.ru Feiskhanova L.I. ― Cand. Med. Sc., […]