1. Changhua County Public Health Bureau, Changhua Taiwan
2. Kaohsiung Chang Gung Memorial Hospital, and Chang Gung University College of Medicine, Kaohsiung Taiwan
3. Changhua County Government, Changhua Taiwan
4. Graduate Institute of Epidemiology and Preventive Medicine, College of Public HealthNational Taiwan UniversityTaipei Taiwan
5. School of Oral Hygiene, College of Oral MedicineTaipei Medical UniversityTaipei Taiwan
6. Department and Graduate Institute of Health Care Management, College of ManagementChang Gung UniversityTaoyuan Taiwan
7. Department of Health Industry Management, College of Healthcare ManagementKainan UniversityTaoyuan Taiwan
8. Changhua Christian HospitalChangua Taiwan
9. Division of GastroenterologyShow Chwan Memorial Hospital, Changhua Taiwan
10. Division of Gastro‐Hepatology Changhua Hospital, Ministry of Health and Welfare, Changhua Taiwan
11. Changhua County Ershuei Township Health CenterChanghua Taiwan
12. Division of Gastroenterology, Department of Internal MedicineShin‐Kong Wu Ho‐Su Memorial HospitalTaipei Taiwan
13. School of MedicineFu‐Jen Catholic UniversityNew Taipei City Taiwan