1. Department of Internal Medicine, Complejo Hospitalario Universitario de A Coruña, A Coruña, Spain
2. Department of Internal Medicine, Hospital Universitario Virgen Macarena, Sevilla, Spain
3. Department of Internal Medicine, Hospital Universitario San Agustín, Avilés, Spain
4. Department of Internal Medicine, Hospital Reina Sofía, Tudela, Spain
5. Department of Ophthalmology, Hospital Clinic de Barcelona, Barcelona, Spain
6. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
7. Department of Ophthalmology, Hospital Universitario Virgen de las Nieves, Granada, Spain
8. Department of Ophthalmology, Complejo Hospitalario de Navarra, Pamplona, Spain
9. Department of Ophthalmology, Hospital Universitario Central de Asturias, Oviedo, Spain
10. Department of Internal Medicine, Hospital Universitario Central de Asturias, Oviedo, Spain
11. Internal Medicine Department, Systemic Autoimmune Unit, Complejo Hospitalario de Navarra, Pamplona, Spain
12. Reference Centre for Systemic Autoimmune Diseases (UEC/CSUR) of the Catalan and Spanish Health Systems-Member of ERNReCONNET, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
13. Department of Internal Medicine, University Hospital Complex of Granada, Granada, Spain