1. Center for Quality Management, Chi Mei Hospital, Liouying Tainan Taiwan
2. School of Nursing Kaohsiung Medical University Kaohsiung Taiwan
3. Department of Medical Research Kaohsiung Medical University Hospital Kaohsiung Taiwan
4. Division of Hematology and Oncology, Chi Mei Hospital, Liouying Tainan Taiwan
5. Department of Environmental and Occupational Health National Cheng Kung University Tainan Taiwan
6. Department of Occupational and Environmental Medicine National Cheng Kung University Hospital Tainan Taiwan
7. Division of Gastroenterology and Hepatology, Chi Mei Hospital, Liouying Tainan Taiwan