1. Department of Otorhinolaryngology National Center for Geriatrics and Gerontology Obu Japan
2. Toyota Josui Mental Clinic Toyota Japan
3. Department of Rehabilitation Ichinomiya Medical Treatment & Habilitation Center Ichinomiya Japan
4. Department of Otorhinolaryngology Nagoya University Graduate School of Medicine Nagoya Japan
5. Biostatistics Center, Graduate School of Medicine Kurume University Fukuoka Japan
6. Center for Comprehensive Care and Research on Memory Disorders National Center for Geriatrics and Gerontology Obu Japan
7. Department of Prevention and Care Science, Research Institute National Center for Geriatrics and Gerontology Obu Japan
8. Department of Cognition and Behavioral Science Nagoya University Graduate School of Medicine Nagoya Japan
9. Department of Otorhinolaryngology Aichi Medical University Nagakute Japan