1. Division of Pharmacy, Chiba University Hospital, Chiba, Chiba 260‑8677, Japan
2. Department of Gastroenterology, Tokyo Women's Medical University, Yachiyo Medical Center, Yachiyo, Chiba 276‑8524, Japan
3. Department of Nursing, Faculty of Health Care Sciences, Chiba Prefectural University of Health Sciences, Chiba, Chiba 261‑0014, Japan
4. Department of Medical Oncology, Graduate School of Medicine, Chiba University, Chiba, Chiba 260‑8670, Japan
5. Department of Otorhinolaryngology/Head and Neck Surgery, Graduate School of Medicine, Chiba University, Chiba, Chiba 260‑8670, Japan