L.I. FEISKHANOVA, R.S. SURKHAYEV, A.S. ABUBAKAROV Kazan State Medical University, Kazan   Contact details: Feiskhanova L.I. ― PhD (medicine), Associate Professor of the Department of Hospital Therapy Address: 49 Butlerov Str., Kazan, Russian Federation, 420012, tel. +7-917-275-21-66, e-mail: ljuts@rambler.ru  Mortality of patients with rheumatoid arthritis (RA) is 1.5 times higher than in the population on average, […]