1. Rheumatology Division, Hospital Universitario Marqués de Valdecilla, IDIVAL, Santander, Spain
2. Rheumatology Division, Hospital de La Princesa, IIS-Princesa, Madrid, Spain
3. Department of Medicine, University of Cantabria, Santander, Spain
4. Cardiovascular Pathophysiology and Genomics Research Unit, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
5. Department of Medicine, Universidad Autónoma de Madrid, Cátedra UAM-Roche, EPID-Future, Madrid, Spain