1. Chuvash Republic Cardiological Dispensary, Cheboksary, Russia, Institute for Advanced Medical Education, Cheboksary, Russia, Federal Center for Traumatology, Orthopedics, and Arthroplasty, Cheboksary, Russia
2. Privolzhsky Research Medical University, Nizhniy Novgorod, Russia
3. Bashkir State Medical University, Ufa, Russia, Central Clinical Hospital of the Russian Academy of Sciences, Moscow, Russia
4. Chuvash Republic Cardiological Dispensary, Cheboksary, Russia
5. Bashkir State Medical University, Ufa, Russia
6. 7 I. M. Sechenov First Moscow State Medical University, Moscow, Russia
7. Institute for Advanced Medical Education, Cheboksary, Russia