A.F. MURZAKHANOVA, V.N. OSLOPOV, E.V. KHAZOVA Kazan State Medical University of the Ministry of Health of the Russian Federation, Kazan  Contact: Oslopov V.N. ― MD, Professor of the Department of Propaedeutics of Internal Diseases named after Prof. S. S. Zimnitsky Address: 49 Butlerov St., 420012, Kazan, Russian Federation, tel. +7-905-316-25-35, e-mail: [email protected] The problems of the […]