1. Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.
2. UCD School of Medicine, University College Dublin, Dublin, Ireland.
3. International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada.
4. Department of Neurosurgery, Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea.
5. Department of Neurosurgery, CHA University, School of Medicine, CHA Bundang Medical Center, Seongnam, Republic of Korea.
6. Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Republic of Korea.