E. N. Shchurova
National Ilizarov Medical Research Centre for Traumatology and Ortopaedics 
Russian Federation

 Dr. Sc. (Biol.), Leading Research Officer at the Clinical Laboratory, Clinic of Spine Pathology and Rare Diseases

 M. Ulyanovoy str. 6, Kurgan 640014, Russian Federation 

O. G. Prudnikova
National Ilizarov Medical Research Centre for Traumatology and Ortopaedics 
Russian Federation

 Dr. Sc. (Med.), Neurosurgeon, Traumatologist-Orthopedist, Senior Research Officer, Head of the Traumatology and Orthopedic Department No. 10, Clinic of Spine Pathology and Rare Diseases

 M. Ulyanovoy str. 6, Kurgan 640014, Russian Federation 

A. A. Kachesova
National Ilizarov Medical Research Centre for Traumatology and Ortopaedics 
Russian Federation

 Рostgraduate, Neurologist 

 M. Ulyanovoy str. 6, Kurgan 640014, Russian Federation