D. A. Ptashnikov
Russian Scientific Research Institute of Traumatology and Orthopedics named after R.R. Vreden; North-Western State Medical University named after I.I. Mechnikov, Ministry of Health of Russia
Russian Federation

Department of Traumatology, Orthopedics and Military Surgery 

8, Akademika Baykova St., St. Petersburg 195427;
47, Piskarevskiy Prosp., St. Petersburg 195067

I. V. Volkov
Clinical Hospital RZD-Medicine
Russian Federation

27, Mechnikov Prosp., St. Petersburg 195271

E. N. Lim
Surgemed Clinic
Uzbekistan

96A, Al-Horezmi St., Urgench 220100

S. G. Normatov
Surgemed Clinic
Uzbekistan

96A, Al-Horezmi St., Urgench 220100

Su Lee Chan
I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University)
Russian Federation

Department of Nervous Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine 

11, Rossolimo St., Build. 1, Moscow 119021