1. Division of Gastroenterology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
2. National Yang-Ming University School of Medicine; Taipei Taiwan
3. Department of Internal Medicine; Taipei City Hospital (Renai Branch); Taipei Taiwan
4. Institute of Public Health; National Yang-Ming University; Taipei Taiwan
5. Medical Affairs Division; National Health Insurance Administration, Ministry of Health and Welfare; Taipei Taiwan
6. Department of Dermatology; Taipei Veterans General Hospital; Taipei Taiwan
7. Department of Dermatology; Taipei City Hospital (Heping Fuyou Branch); Taipei Taiwan
8. Division of Hematology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
9. Department of Oncology Medicine; Taipei Veterans General Hospital; Taipei Taiwan.