1. Institute of Biomedical Sciences; National Sun Yat-Sen University; Kaohsiung Taiwan Republic of China
2. Division of Internal Medicine; Kaohsiung Municipal Hsiao-Kang Hospital; Kaohsiung Medical University; Kaohsiung Taiwan Republic of China
3. Division of Gastroenterology; Department of Internal Medicine; Kaohsiung Medical University Hospital; Kaohsiung Taiwan Republic of China
4. Cancer Center; Kaohsiung Medical University Hospital; Kaohsiung Taiwan Republic of China
5. National Institute of Cancer Research; National Health Research Institutes; Tainan Taiwan Republic of China