1. Division of Rheumatology, Department of Internal Medicine Kaohsiung Veterans General Hospital Kaohsiung Taiwan
2. Division of Rheumatology, Department of Internal Medicine Chi Mei Medical Center Tainan Taiwan
3. National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
4. Chung Shan Medical University Taichung Taiwan
5. Kaohsiung Chang Gung Memorial Hospital and School of Medicine Chang Gung University Taoyuan Taiwan