1. Department of Neurosurgery Soonchunhyang University Bucheon Hospital Bucheon Republic of Korea
2. Laboratory of Stem Cell Therapy, Asan Medical Center University of Ulsan College of Medicine Seoul Republic of Korea
3. Department of Internal Medicine Kyung Hee University School of Medicine Seoul Republic of Korea
4. Department of Neurological Surgery, Asan Medical Center University of Ulsan College of Medicine Seoul Republic of Korea
5. OSTEONIC Co., Ltd. Seoul Republic of Korea
6. Department of Rehabilitation Medicine, Asan Medical Center University of Ulsan College of Medicine Seoul Republic of Korea