1. Division of Rheumatology, Hospital Doctor Negrín, Las Palmas de Gran Canaria
2. Epidemiology and Public Health Group, IDIVAL
3. Medical and Surgical Sciencies Department, University of Cantabria
4. CIBER Epidemiología y Salud Pública (CIBERESP)
5. Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, Universidad de Cantabria
6. Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Hospital Universitario Marqués de Valdecilla, IDIVAL, Santander, Spain
7. Cardiovascular Pathophysiology and Genomics Research Unit, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
8. Division of Rheumatology, Hospital Universitario de Canarias, Tenerife, Spain