1. Department of Medical Oncology, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
2. Department of Respirology, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
3. Division of Pharmacy, Chiba University Hospital, Chiba University, Chiba 260‑8670, Japan
4. Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
5. Department of Otorhinolaryngology/Head and Neck Surgery, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan