1. Department of Medical Education, Chang Gung Memorial Hospital, Keelung Branch, Keelung 20401, Taiwan
2. Department of Medical Education, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 33305, Taiwan
3. Division of Rheumatology, Allergy, and Immunology at Chang Gung Memorial Hospital, Linkou Branch, and Chang Gung University College of Medicine, Taoyuan 33305, Taiwan
4. Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou Branch, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan