1. FSBI A.N. Ryzhykh Scientific Medical Research Center for Coloproctology of the Ministry of Healthcare of Russia , Moscow
2. Military Medical Academy, Department of Hematology , Belgrade , Serbia
3. SBHI MR L`vov Regional Hospital , Moscow
4. International Medical Center ON CLINIC , Moscow , Russia
5. SBHI MR M.F. Vladimirskiy Moscow Regional Research Clinical Institute , Moscow
6. N.N. Burdenko National Scientific and Practical Centre for Neurosurgery , Moscow
7. I.M. Sechenov First Moscow State Medical University (Sechenov University) , Moscow