1. Research Institute for Complex Issues of Cardiovascular Diseases under the Siberian Branch of the Russian Academy of Medical Sciences, Sosnovy Bulvar 6, Kemerovo 650002, Russia
2. Department of Cardiology and Cardiovascular Surgery, Kemerovo State Medical Academy, Sosnovy Bulvar 6, Kemerovo 650002, Russia
3. Kemerovo Cardiological Centre, Sosnovy Bulvar 6, Kemerovo 650002, Russia
4. Department of Epidemiology, Kemerovo State Medical Academy, Voroshilova Street 22a, Kemerovo 650002, Russia