1. Department of Otorhinolaryngology Nagoya University Graduate School of Medicine Nagoya Aichi Japan
2. Department of Otolaryngology‐Head and Neck Surgery Ehime University Graduate School of Medicine Toon Ehime Japan
3. KOTOBUKI Medical Inc Yashio Saitama Japan
4. Department of Otolaryngology‐Head and Neck Surgery Vanderbilt University Medical Center Nashville Tennessee USA