1. Department of Faculty Therapy № 2, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
2. Department of Polyclinic Therapy, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
3. Functional Diagnostic Department, University Clinical Hospital #4, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
4. Department of Faculty Therapy № 2, Faculty Therapy Clinic, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.