1. Department of Otolaryngology, Head and Neck Surgery, School of Medicine, Tokai University, Isehara, Japan
2. Department of Rehabilitation Services, Tokai University Hospital, Isehara, Japan
3. Basic Clinical Science and Public Health, School of Medicine, Tokai University, Isehara, Japan
4. Department of Rehabilitation Medicine, Kawasaki Medical School, Kawasaki, Japan