1. Hospital Provincial de Rosario, Rosario, Santa Fe, Argentina
2. Centro Regional de Enfermedades Autoinmunes y Reumáticas (CREAR), Grupo Oroño. Rosario, Santa Fe, Argentina
3. Department of Medicine, Division of Clinical Immunology and Rheumatology, School of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
4. Department of Rheumatology, Hospital Guillermo Almenara Irigoyen. EsSalud, Lima, Perú
5. Universidad Científica del Sur, Lima, Perú