Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, 13496, South Korea. Department of Radiology, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, 13496, South Korea. CHA Biotec®, Seongnam-si, Gyeonggi-do, 13488, South Korea. Department of Neurosurgery, Shim Jeong Hospital, Seoul, 151715, South Korea. Department of Orthopedic Surgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, 13496, South Korea. Department of Neurosurgery, Kyungpook National University Hospital 130, Dongdeok-ro, Jung-gu, Daegu, 41944, Korea. Department of Neurosurgery, Baylor College of Medicine, Houston, TX, 77030, USA. Department of Plastic and Reconstructive Surgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, 13496, South Korea. Anioplex LLC, Campbell, CA, 95008, USA. Department of Biomedical Science, CHA University, Seongnam-si, Gyeonggi-do, 13496, South Korea. soohong@cha.ac.kr. Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, 13496, South Korea. hanib@cha.ac.kr.