1. Center for Autoimmune Diseases Research (CREA), School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
2. Neurology Service, Clínica Universitaria Bolivariana, Universidad Pontificia Bolivariana, Medellín, Colombia
3. Division of Rheumatology, Allergy and Clinical Immunology, University of California Davis, School of Medicine, Davis, CA, USA