1 Unit of Systemic Diseases, Department of Internal Medicine, Hospital Clínico Universitario de Santiago de Compostela, A Coruña, Spain. Electronic address: maria.carmen.freire.dapena@sergas.es.
2 Unit of Systemic Diseases, Department of Internal Medicine, Hospital Clínico Universitario de Santiago de Compostela, A Coruña, Spain.
3 Unit of Autoimmune Diseases, Department of Internal Medicine, Hospital Universitario Vall d'Hebron, Barcelona, Spain.
4 Department of Autoimmune Diseases. Reference Centre for Systemic Autoimmune Diseases (UEC/CSUR) of the Catalan and Spanish Health Systems-Member of ERNReCONNET, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.
5 Unit of Autoimmune Diseases, Department of Internal Medicine, Hospital Universitario de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain.
6 Department of Internal Medicine, Hospital de Cabueñes, Gijón, Spain.
7 Unit of Systemic Diseases, Department of Internal Medicine, Complejo Hospitalario Universitario de Vigo, Spain.
8 Department of Internal Medicine, Corporación Sanitaria Universitaria Parc Taulí, Sabadell, Barcelona, Spain.
9 Department of Internal Medicine, Hospital Universitario Virgen de las Nieves, Granada, Spain.
10 Unit of Systemic Autoimmune Diseases, Department of Internal Medicine, Consorci Hospitalari de Vic, Barcelona, Spain.
11 Autoimmune Diseases Research Unit, Department of Internal Medicine, Hospital Universitario de Cruces, Baracaldo, Spain.
12 Department of Internal Medicine, Complejo Asistencial Universitario de Salamanca, Spain.
13 Department of Internal Medicine, Hospital Universitario Infanta Sofía, Madrid, Spain.
14 Department of Internal Medicine, Hospital Ramón y Cajal, Madrid, Spain.
15 Department of Internal Medicine, Hospital de l'Esperit Sant, Barcelona, Spain.
16 Department of Internal Medicine, Hospital Universitario de Fuenlabrada, Madrid, Spain.
17 Department of Internal Medicine, Hospital Universitari Sant Joan de Reus, Tarragona, Spain.
18 Department of Internal Medicine, Hospital de Sagunto, Valencia, Spain.
19 Unit of Autoimmune Diseases, Department of Internal Medicine, Hospital Clínico Universitario Lozano Blesa, IIS Aragón, Zaragoza, Spain.
20 Department of Internal Medicine, Hospital Universitario Mútua Terrassa, Terrassa, Barcelona, Spain.
21 Department of Internal Medicine, Hospital Universitario Miguel Servet, Zaragoza, Spain.
22 Inst Invest Biosanitaria Ibs Granada. Department of Internal Medicine, Unit of Systemic Autoimmune Diseases. Department of Medicine, Facultad de Medicina, Hospital Universitario San Cecilio, Granada, Spain.
23 Department of Internal Medicine, Hospital Universitario y Politécnico La Fe, Valencia, Spain.