1. Department of Neurosurgery, Mie Chuo Medical Center, Tsu, Mie, Japan;
2. Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan;
3. Department of Rehabilitation Medicine II, School of Medicine, Fujita Health University, Tsu, Mie, Japan;
4. Department of Rehabilitation, Mie Chuo Medical Center, Tsu, Mie, Japan