Affiliation: | 1. Department of Biomedical Science, CHA University, 135‐081 Seoul, Republic of Korea;2. School of Mechanical Systems Engineering, Chonnam National University, 500‐757 Gwangju, Republic of Korea;3. Department of Neurosurgery, CHA University, 463‐712 Seongnam, Republic of Korea;4. Department of Mechanical Engineering, Pohang University of Science and Technology, 790‐784 Pohang, Republic of Korea |