[1] Inst Rehabil Psicofis, Buenos Aires, DF, Argentina
[2] HIGA San Martin La Plata, Buenos Aires, DF, Argentina
[3] Hosp Univ Valle, Cali, Colombia
[4] Hosp Italiano Buenos Aires, Buenos Aires, DF, Argentina
[5] Ctr Dermatol & Reumatol FUNINDERMA, Bogota, Colombia
[6] Ctr Invest Clin Ciudad Obregon, Obregon, Sonora, Mexico
[7] Ctr Excelencia Reumatol, Lima, Peru
[8] Clin Sur, Arequipa, Peru
[9] Hosp Santo Tomas, Panama City, Panama
[10] Hosp Servidor Publ Estadual, Sao Paulo, Brazil
[11] Hosp Reg Copiapo, Copiapo, Chile
[12] Hosp Metropolitano Quito, Quito, Ecuador
[13] OMI, Buenos Aires, DF, Argentina
[14] Univ Fed Uberlandia, Uberlandia, MG, Brazil
[15] Hosp Cent FAP, Lima, Peru
[16] CIRCARIBE, Barranquilla, Colombia
[17] Inst Gruparj Petropolis, Petropolis, RJ, Brazil
[18] Hosp Univ Puebla, Puebla, Mexico
[19] Reumatologia, Buenos Aires, DF, Argentina
[20] Hosp Gen Plaza Salud, Santo Domingo, Dominican Rep
[21] Pfizer Inc, Buenos Aires, DF, Argentina
[22] Pfizer Inc, Bogota, Colombia
[23] Pfizer Inc, San Jose, Costa Rica
[24] Pfizer Inc, Lima, Peru
[25] Pfizer Inc, Santiago, Chile