1. Department of Head and Neck Surgery, Division of Otolaryngology, Saitama Medical University International Medical Center, Hidaka, Japan
2. Department of Clinical Cancer Genomics, Saitama Medical University International Medical Center, Hidaka, Japan
3. Department Otolaryngology, Tokai University, Kanagawa, Japan
4. Division of Biomedical Sciences, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan