1. Department of Otolaryngology‐Head and Neck Surgery Kochi Medical School Nankoku Kochi Japan
2. Integrated Center for Advanced Medical Technologies, Kochi Medical School Hospital Nankoku Kochi Japan
3. Department of Medical Innovation Osaka University Hospital Suita Osaka Japan
4. Department of Engineering Informatics Osaka Electro‐Communication University Neyagawa Osaka Japan
5. Rehabilitation Department Kochi Medical School Hospital Nankoku Kochi Japan