M.V. BLOKHINA1, O.G. SAFINA2  1Kazan State Medical University, Kazan 2Republic Clinical Hospital, Kazan  Contact details: Blokhina M.V. — MD, Associate Professor of the Department of Public Health and Healthcare Organization Address: 49 Butlerov St., Kazan, Russian Federation, 420012, tel.: +7-903-318-31-62, e-mail: marinakgmu@mail.ru Within the framework of the study, based on a review of literary sources, […]