1 Department of Rheumatology, Hospital Guillermo Almenara Irigoyen, EsSalud, Lima, Peru.
2 School of Medicine, Universidad Científica del Sur, Lima, Peru.
3 School of Medicine, Universidad Nacional de Rosario, Rosario, Argentina.
4 Department of Autoimmune Diseases, Hospital Clinic, Barcelona, Spain.
5 Department of Rheumatology, Centro Regional de Enfermedades Autoinmunes y Reumáticas (CREAR), Sanatorio Parque, Rosario, Argentina.
6 Department of Medicine, Division of Clinical Immunology and Rheumatology, School of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA.