1. Division of Dermatology, Hospital Universitario de Canarias, 38320 Tenerife, Spain
2. Division of Rheumatology, Hospital Universitario de Canarias, 38320 Tenerife, Spain
3. Division of Rheumatology, Hospital Doctor Negrín, 35010 Las Palmas de Gran Canaria, Spain
4. Division of Internal Medicine, Hospital Universitario de Canarias, 38320 Tenerife, Spain
5. Division of Central Laboratory, Hospital Universitario de Canarias, 38320 Tenerife, Spain
6. Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Instituto de Investigación Sanitaria Marqués de Valdecilla (IDIVAL), 39011 Santander, Spain
7. Department of Internal Medicine, Universidad de La Laguna (ULL), 38200 Tenerife, Spain
8. Division of Rheumatology, IIS-Fundación Jiménez Díaz, 28040 Madrid, Spain
9. Department of Medicine, University of Cantabria, 39005 Santander, Spain
10. Cardiovascular Pathophysiology and Genomics Research Unit, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa