1. Department of Respiratory Medicine, Kyoto University Graduate School of Medicine, Kyoto 606‑8507, Japan
2. Department of Surgery, Gastrointestinal Center, Kyoto‑Katsura Hospital, Kyoto 615‑8256, Japan
3. Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, Kyoto 606‑8507, Japan
4. Department of Respiratory Medicine, Shiga Medical Center for Adults, Moriyama, Shiga 524‑0022, Japan