[1] Univ Hong Kong, Dept Med, Queen Mary Hosp, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Dept Med, Hong Kong SAR, Peoples R China
[3] Padjadjaran State Univ, Fac Med, Internal Med Dept, Bandung, Indonesia
[4] Chiang Mai Univ, Div Rheumatol, Dept Internal Med, Chiang Mai, Thailand
[5] China Med Univ Hosp, Rheumatol & Immunol Ctr, Taichung, Taiwan
[6] Hanyang Univ, Hanyang Univ Hosp Rheumat Dis, Dept Rheumatol, Inst Rheumatol Res, Seoul, South Korea
[7] Hanyang Inst Biosci & Biotechnol, Seoul, South Korea
[8] Chinese Acad Med Sci, Natl Clin Res Ctr Dermatol & Immunol Dis, Beijing, Peoples R China
[9] Univ Santo Tomas, Sect Rheumatol, Manila, Philippines
[10] Univ Occupat & Environm Hlth, Sch Med, Dept Internal Med 1, Kitakyushu, Japan
[11] Tuen Mun Hosp, Dept Med, Hong Kong, Peoples R China