1. Federal Center for Cardiovascular Surgery, Ministry of Health of Russia
2. Acad. E.A. Vagner Perm State Medical University, Ministry of Health of Russia
3. N.I. Pirogov National Medical and Surgical Center, Ministry of Health of Russia
4. Federal Center for Cardiovascular Surgery, Ministry of Health of Russia; Astrakhan State Medical University, Ministry of Health of Russia
5. Pyatigorsk City Clinical Hospital No. 2