1. Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
2. Division of Mechanical Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Ube, Yamaguchi, Japan
3. Department of Biological Functions Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, Fukuoka, Japan
4. Department of Neurosurgery, Ise Red Cross Hospital, Ise, Mie, Japan
5. Department of Neurosurgery, Mie Prefectural General Medical Center, Yokkaichi, Mie, Japan