1. Higher School of Health Administration, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
2. Department of Internal, Occupational Diseases and Pulmonology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
3. Department of Faculty Therapy №1, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
4. Department of Emergency Aid, Semey State Medical University, Semey, Kazakhstan
5. Department of Surgical Disciplines, Semey State Medical University, Semey, Kazakhstan