1. Smolensk State Medical University (Smolensk, Russia)
2. I.M. Sechenov First Moscow State Medical University (Moscow, Russia)
3. Krasnoyarsk State Medical University named after prof. V.F. Voyno-Yasenetsky (Krasnoyarsk, Russia)
4. Omsk Regional Clinical Hospital (Omsk, Russia)
5. A.N. Bakulev National Medical Research Center for Cardiovascular Surgery (Moscow, Russia)
6. M.K. Ammosov Federal University (Yakutsk, Russia)
7. Saratov State Medical University named after V.I. Razumovsky (Saratov, Russia)
8. City Clinical Hospital named after S.S. Yudin (Moscow, Russia)
9. Republican Clinical Hospital named after N.A. Semashko (Ulan-Ude, Russia)
10. Smolensk Regional Clinical Hospital (Smolensk, Russia)
11. Regional Clinical Hospital (Krasnoyarsk, Russia)
12. Saratov State Medical University named after V. I. Razumovsky (Saratov, Russia)