[1] Peking Univ, Peoples Hosp, Dept Rheumatol & Immunol, Beijing, Peoples R China
[2] Peking Univ, Int Hosp, Dept Rheumatol & Immunol, Beijing, Peoples R China
[3] Peking Univ, Peoples Hosp, Rheumatol, Beijing, Peoples R China
[4] Peking Univ, Int Hosp, Beijing, Peoples R China
[5] Peking Univ, Peoples Hosp, Dept Radiol, Beijing, Peoples R China