1. I. I. Mechnikov North-Western State Medical University
2. N. I. Pirogov Clinic of High Medical Technologies of the St. Petersburg State University
3. Clinic of Cardiovascular Surgery of the Amur State Medical Academy
4. E. I. Korolev Kostroma Regional Clinical Hospital;
Yaroslavl State Medical University
5. I. I. Mechnikov North-Western State Medical University
Alexander City Hospital
6. E. I. Korolev Kostroma Regional Clinical Hospital
7. Kemerovo State Medical University
8. I. M. Sechenov First Moscow State Medical University
9. Alexander City Hospital
10. Kostroma Oncology Dispensary
11. I. M. Sechenov First Moscow State Medical University;
B. V. Petrovsky Russian Research Center of Surgery