R. A. Kovalenko
Almazov National Medical Research Centre
Russian Federation

Roman Aleksandrovich Kovalenko - MD, PhD, neurosurgeon, Neurosurgery Department 6.

2 Akkuratova str., St. Petersburg, 197341.

D. A. Ptashnikov
Russian Scientific Research Institute of Traumatology and Ortopedics n.a. R.R. Vreden
Russian Federation

Dmitry Aleksandrovich Ptashnikov - DMSc, Prof.,   head of the Department of Neuroorthopaedics and  Bone  Oncology.

8 Akademika Baykova str., St. Petersburg, 195427.

A. V. Savello
Almazov National Medical Research Centre
Russian Federation

Aleksandr  Viktorovich  Savello - DMSc, Professor of the  Neurosurgery Department.

2 Akkuratova  str.,  St. Petersburg, 197341.

S. V. Masevnin
Russian Scientific Research Institute of Traumatology and Ortopedics n.a. R.R. Vreden
Russian Federation

Sergey Vladimirovich Masevnin - MD, PhD, junior researcher, Department of Neuroorthopaedics and  Bone  Oncology.

8 Akademika Baykova str., St. Petersburg, 195427.

V. A. Kashin
Almazov National Medical Research Centre
Russian Federation

Vasily Andreyevich Kashin - clinical resident, Neurosurgery Department.

2 Akkuratova str., St. Petersburg, 197341.