[1] Univ Tasmania, Hobart, Tas, Australia
[2] Hosp Sun Yat Sen Univ, Guangzhou, Peoples R China
[3] Ctr Arthritis, Palm Harbor, FL USA
[4] Univ Peruana Cayetano Heredia, San Felipe Clin, Lima, Peru
[5] Univ Santiago de Compostela, Santiago De Compostela, Spain
[6] Inst CAICI, Rosario, Argentina
[7] Univ Med Ctr, Ljubljana, Slovenia
[8] Stanford Univ, Med Ctr, Palo Alto, CA 94304 USA
[9] Arthritis Res Florida, Palm Harbor, FL USA