1. Musculoskeletal and Rheumatic Diseases Division, Synovial Fluid Laboratory, National Institute of Rehabilitation “Luis Guillermo Ibarra Ibarra”, Mexico City, Mexico
2. Rheumatology Unit, Department of Medicine - DIMED, University of Padova, Padova, Italy
3. CIENI, Center for Research in Infectious Diseases, National Institute of Respiratory Diseases, Mexico City, Mexico
4. Graduate Studies Department, Escuela Superior de Medicina, Instituto Politécnico Nacional. Salvador Díaz Mirón esq. Plan de San Luis S/N, Miguel Hidalgo, Casco de Santo Tomas, Mexico City, Mexico