1. Stem Cell Neuroplasticity Research Group, Kyungpook National University, Daegu 41566, Korea
2. Department of Physiology, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu 41944, Korea
3. Department of Biomedical Science, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University, Daegu 41944, Korea
4. Department of Orthopaedic Surgery, Kyungpook National University Hospital, Daegu 41944, Korea
5. Department of Mechanical Engineering, Gumi University, Gumi 39213, Korea
6. School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea
7. Department of Laboratory Animal Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea