1. Department of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander, and Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and in Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain.
2. Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and in Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain.
3. Department of Immunology, Hospital Universitario Marqués de Valdecilla, Santander, Spain.
4. Department of Rheumatology, Hospital Universitario Virgen del Rocío, Sevilla, Spain.
5. Department of Rheumatology, Hospital Universitario y Politécnico La Fe, Valencia, Spain.
6. Department of Rheumatology, Complejo Hospitalario Universitario Pontevedra, Spain
7. Department of Rheumatology, Complejo Asistencial Universitario de León, Spain.
8. Department of Rheumatology, Hospital Universitario de Basurto, Bilbao, Spain.
9. Autoimmune Diseases Unit, Hospital Universitario San Cecilio, Instituto de Investigación Biosanitaria de Granada (IBS Granada), Department of Internal Medicine, University of Granada, Spain.
10. Department of Rheumatology, Hospital Universitario San Agustín, Avilés, Spain.
11. Division of Rheumatology, Hospital Universitario Lucus Augusti, Lugo, Spain.
12. Department of Rheumatology, Hospital Universitario de la Princesa, IIS-Princesa, Cátedra EPID Future, Universidad Autónoma de Madrid (UAM), Madrid, Spain.
13. School of Medicine, Universidad de Cantabria, Santander, Spain.
14. Health Research Institute of Santiago, and The NEIRID Group (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Santiago University Clinical Hospital, Santiago de Compostela, Spain.
15. Instituto de Parasitología y Biomedicina ‘López-Neyra’, CSIC, PTS Granada, Spain.
16. Department of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander; Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and in Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander; School of Medicine, Universidad de Cantabria, Santander, Spain; and Cardiovascular Pathophysiology and Genomics Research Unit, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa. miguelaggay@hotmail.com