1. Department of Autoimmune Diseases, Institut Clinic de Medicina I Dermatologia, Hospital Clinic, Barcelona, Catalonia, Spain
2. Division of Rheumatology and Autoimmune Diseases, Sanatorio Parque, Grupo Oroño, Rosario, Argentina
3. Servicio de Reumatología, Hospital Nacional Guillermo Almenara Irigoyen, EsSalud, Lima, Perú
4. School of Medicine, Universidad Científica del Sur, Lima, Perú
5. Division of Clinical Immunology and Rheumatology, School of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
6. Department of Medicine, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Perú