[1] Hosp Nacl Guillermo Almenara Irigoyen, EsSalud, Serv Reumatol, Ave Miguel Grau 800, Lima 15033, Peru
[2] Univ Cient Sur, Lima, Peru
[3] Univ San Sebastian, Fac Med & Ciencia, Ctr Biol Celular & Biomed CEBICEM, Santiago, Chile
[4] Hosp Prov Rosario, Serv Reumatol, Rosario, Santa Fe, Argentina
[5] Hosp Privado Univ Cordoba, Serv Reumatol, Cordoba, Argentina
[6] Ctr Invest Clin Morelia, Morelia, Michoacan, Mexico
[7] Hosp Italiano Buenos Aires, Serv Clin Med, Secc Reumatol, Buenos Aires, DF, Argentina
[8] Ctr Educ Med Invest Clin Norberto Quirno CEMIC, Secc Inmunol & Reumatol, Buenos Aires, DF, Argentina
[9] Corp Med Monte Sinai, Unidad Enfermedades Reumat & Autoinmunes UNERA, Cuenca, Ecuador
[10] Univ Espiritu Santo, Ctr Reumatol & Rehabil, Guayaquil, Ecuador
[11] Univ Fed Parana, Hosp Clin, Serv Reumatol, Curitiba, Parana, Brazil
[12] Univ Estado Rio de Janeiro, Dept Med Interna, Disciplina Reumatol, Rio De Janeiro, Brazil
[13] Univ Estado Rio de Janeiro, Fac Ciencias Med, Dept Med Interna,Fac Med,Univ Estacio Sa, Serv Reumatol,Hosp Gen Santa Casa Misericordia Ri, Rio De Janeiro, Brazil
[14] Univ Estadual Campinas, Rheumatol Unit, Sch Med Sci, Campinas, SP, Brazil
[15] Pontificia Univ Catolica Rio Grande do Sul, Porto Alegre, RS, Brazil
[16] Ctr Paulista Invest Clin, Sao Paulo, Brazil
[17] Hosp Univ Norte, Serv Reumatol, Barranquilla, Colombia
[18] Fdn Univ Ciencias Salud FUCS, Bogota, Colombia
[19] Hosp Clin Quirurg Diez de Octubre, Serv Reumatol, Havana, Cuba
[20] Hosp Clin San Borja Arriaran, Serv Reumatol, Santiago, Chile
[21] Consultorio Especialidades Inst Salvadoreno Segur, Dept Reumatol, San Salvador, El Salvador
[22] Hosp Gen Mexico City, Serv Reumatol, Mexico City, DF, Mexico
[23] Hosp Univ Dr Jose Eleuterio Gonzalez, Serv Reumatol, Monterrey, Mexico
[24] Univ Guadalajara, Hosp Gen Occidente, Dept Inmunol & Reumatol, Guadalajara, Jalisco, Mexico
[25] Hosp Angeles Pedregal, Serv Reumatol, Mexico City, DF, Mexico
[26] Cto Med Nacl 20 Noviembre, Serv Reumatol, Mexico City, DF, Mexico
[27] Univ Costa Rica, HospitalMexico, Caja Costarricense Seguro Social, San Jose, Costa Rica
[28] MUCAM, Montevideo, Uruguay
[29] Complejo Hosp Metropolitano Dr Arnulfo Arias Madr, Caja Seguro Social Panama, Panama City, Panama
[30] Hosp Cent San Cristobal, Dept Med, Serv Reumatol, San Cristobal, Venezuela
[31] Univ Alabama Birmingham, Sch Med, Dept Med, Div Clin Immunol & Rheumatol, Birmingham, AL USA
[32] Ctr Reg Enfermedades Autoinmunes & Reumat CREAR, Dept Med Interna, Grp Orono, Rosario, Santa Fe, Argentina