1. Outpatient Dermatology Clinic, Hospital General de Zona 32, Instituto Mexicano del Seguro Social, Mexico City, Mexico
2. Department of Rheumatology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
3. Department of Immunology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
4. Unidad de Investigación Traslacional UNAM/INC, Mexico City, Mexico
5. Department of Health Care, Universidad Autónoma Metropolitana-Xochimilco, Mexico City, Mexico