[1] Inha Univ Hosp, Inchon, South Korea
[2] Univ Chile, Santiago, Chile
[3] Ctr Estudios Reumatol, Santiago, Chile
[4] Pomeranian Med Univ, Dept Rheumatol & Internal Dis, Szczecin, Poland
[5] Med Univ Wroclaw, Wroclaw, Poland
[6] Antiguo Hosp Civil Guadalajara, Guadalajara, Jalisco, Mexico
[7] Outpatient Clin ORTO, Riga, Latvia
[8] Kyung Hee Univ, Seoul, South Korea
[9] Ternopil Univ Hosp, Municipal Inst Ternopil Reg Council, Ternopol, Ukraine
[10] Multiprofile Hosp Act Treatment Sv Marina, Varna, Bulgaria
[11] Univ Autonoma San Luis Potosi, Hosp Cent, San Luis Potosi, Mexico
[12] Univ Autonoma San Luis Potosi, Fac Med, San Luis Potosi, Mexico
[13] CELLTRION, Inchon, South Korea
[14] Hanyang Univ, Hosp Rheumat Dis, Seoul 133791, South Korea
[15] Rheumazentrum Ruhrgebiet, Herne, Germany