[1] Hosp Ignacio Pirovano, Serv Reumatol, Buenos Aires, DF, Argentina
[2] Univ Los Andes, Hosp Univ Los Andes, Inst Autonomo, Merida, Venezuela
[3] Complejo Hosp Univ Ruiz & Pez, Ciudad Bolivar, Venezuela
[4] Clin Felix Boada, Unidad Invest Reumatol, Caracas, Venezuela
[5] Hosp Perez Carreno, Caracas, Venezuela
[6] Clin Colinas, Anzoategui, Venezuela
[7] Univ Los Andes, Serv Traumatol, Hosp Univ Los Andes, Inst Autonomo, Merida, Venezuela
[8] Ctr Clin La Isabelica, Carabobo, Venezuela
[9] Inst Docente Urol, Valencia, Venezuela
[10] Univ Los Andes, LabMice, Merida, Venezuela
[11] Inst Nacl Rehabil, Mexico City, DF, Mexico
[12] Univ Autonoma Nuevo Leon, Serv Reumatol, Dept Med Interna, San Nicolas De Los Garza, Nuevo Leon, Mexico
[13] Univ Republica, Fac Med, Catedra Reumatol, Montevideo, Uruguay
[14] Medicarte, Arthrit Clin Res Unit, Medellin, Colombia
[15] Grp Reumatol Caribe, Barranquilla, Colombia
[16] Univ Catolica Chile, Dept Reumatol, Santiago, Chile
[17] Hosp Quirurg 10 Octubre, Serv Reumatol, Havana, Cuba
[18] Hosp Hermanos Ameijeiras, Serv Reumatol, Havana, Cuba
[19] Hosp Clin Quirurg Hermanos Ameijeiras, Serv Reumatol, Havana, Cuba
[20] Acad Univ Catolica, Caja Petr Salud Techo, Hosp Santa Cruz, Serv Reumatol, San Pablo, Bolivia
[21] Acad Univ Catolica, Serv Reumatol Kolping, San Pablo, Bolivia
[22] Acad Univ Catolica, Hosp Alfonzo Gumucio Techo, San Pablo, Bolivia
[23] UFM, FM, AGAR, Postgrad Reumatol, Guatemala City, Guatemala
[24] Inst Salvadoreno Seguro Social, Serv Reumatol, San Miguel, El Salvador
[25] Univ Nacl Asuncion, Hosp Clin Asuncion, Serv Reumatol, Asuncion, Paraguay
[26] Hosp San Ramon, Serv Reumatol, Santa Rita, Paraguay
[27] Univ Peruana Ciencias Aplicadas UPC, Lima, Peru
[28] British Amer Hosp, Serv Reumatol, Lima, Peru
[29] Univ Nacl Mayor San Marcos, Lima, Peru
[30] Univ Estadual Campinas, UNICAMP, Fac Ciencias Med, Dept Clin Med, Sao Paulo, Brazil
[31] Hosp Docente Padre Billini, Clin Abreu, Serv Reumatol, Santo Domingo, Dominican Rep
[32] Hosp Dr Rafael A Calderon Guardia, Serv Reumatol, San Jose, Costa Rica
[33] Pontificia Univ Catolica Ecuador, Fac Med, Quito, Ecuador
[34] Hosp Cent Managua, Unidad Reumatol, Managua, Nicaragua
[35] Hosp Especializado Dr Arnulfo Arias Madrid, Panama City, Panama
[36] Hosp Santo Tomas, Panama City, Panama
[37] Warren Alpert Sch Med, Div Rheumatol, Providence, RI USA
[38] Univ Barcelona, Inst Poal, Barcelona, Spain
[39] Univ Norte, Barranquilla, Colombia