1. Departments of Orthopedics and Microsurgery, Inada Hospital, Nara, Japan
2. Department of Otorhinolaryngology, Nara Medical University, Nara, Japan
3. Department of Neurology, Nara Rehabilitation Center, Nara, Japan
4. Department of Orthopedics, Nara Medical University, Nara, Japan
5. Department of Material Chemistry, Kyoto University, Kyoto, Japan
6. Department of Otolaryngology, Kyoto University, Kyoto, Japan
7. Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan