1. Department of Otolaryngology‑Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634‑8522, Japan
2. Division of Gastrointestinal Oncology, Shizuoka Cancer Center, Sunto‑Gun, Shizuoka 411‑8777, Japan
3. Departments of Cancer Genomics and Medical Oncology, Nara Medical University, Kashihara, Nara 634‑8522, Japan