1. Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si 13496, Republic of Korea
2. Research Competency Milestones Program, School of Medicine, CHA University, Seongnam-si 13488, Republic of Korea
3. Department of Medicine, School of Medicine, CHA University, Seongnam-si 13496, Republic of Korea
4. Department of Biomedical Science, Inha University College of Medicine, Incheon 22212, Republic of Korea
5. Advanced Regenerative Medicine Research Center, CHA Future Medicine Research Institute, Seongnam-si 13488, Republic of Korea