1. Division of Gastroenterology and Hepatology, Department of Internal MedicineNational Taiwan University Hospital Taipei Taiwan
2. Department of Internal MedicineNational Taiwan University College of Medicine Taipei Taiwan
3. Institute of Occupational Medicine and Industry HygieneNational Taiwan University College of Public Health Taipei Taiwan
4. Integrated Diagnostics and TherapeuticsNational Taiwan University Hospital, National Taiwan University College of Medicine Taipei Taiwan
5. Department of Internal MedicineNational Taiwan University Hospital, Yun‐Lin Branch, National Taiwan University College of Medicine Yunlin Taiwan
6. Department of Internal MedicineNational Taiwan University Hospital, Hsin‐Chu Branch Hsinchu Taiwan
7. Division of Gastroenterology, Department of Internal MedicineMackay Memorial Hospital, Taitung Branch Taitung Taiwan
8. Mackay Medical College New Taipei City Taiwan