Institution: | 1.Biomedical Research Subdirection,Instituto Nacional de Rehabilitación,Mexico City,Mexico;2.Department of Immunology,Instituto Nacional de Cardiología Ignacio Chávez,Mexico City,Mexico;3.Department of Rheumatology,Hospital Nacional Rosales and Instituto Salvadore?o del Seguro Social,San Salvador,Salvador;4.Department of Rheumatology,Hospital General Dr. Manuel Gea González,Mexico City,Mexico;5.Department of Musculoskeletal Ultrasonography,Instituto Nacional de Rehabilitación,Mexico City,Mexico;6.Department of Rheumatology,Instituto Nacional de Cardiología Ignacio Chávez,Mexico City,Mexico;7.Clinica Reumatologica,Università Politecnica delle Marche,Jesi,Italy |