1 Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg, Russia.
2 Velikie Luki State Academy of Physical Education and Sports, Velikiye Luki, Russia.
3 Kentucky Spinal Cord Injury Research Center, Frazier Rehab Institute, University of Louisville Health, University of Louisville, Louisville, KY, United States.
4 Department of Neurological Surgery, University of Louisville, Louisville, KY, United States.
5 Department of Neurobiology, and Neurosurgery, University of California, Los Angeles, Los Angeles, CA, United States.
6 Institut Guttmann Hospital de Neurorehabilitació, Institut Universitari adscrit a la Universitat Autònoma de Barcelona, Barcelona, Spain.
7 Faculty of Science, The Center for Neuroscience and Regenerative Medicine, University of Technology Sydney, Ultimo, NSW, Australia.
8 Department of Physiology and Biophysics, University of Louisville, Louisville, KY, United States.