1. Department of Gastroenterology, Suzuka General Hospital, Suzuka, Mie 513‑8630, Japan
2. Department of Cardiology, Suzuka General Hospital, Suzuka, Mie 513‑8630, Japan
3. Department of Thoracic and Cardiovascular Surgery, School of Medicine, Mie University, Tsu, Mie 514‑8507, Japan