1. Rheumatology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
2. Department of Rheumatology and Clinical Immunology, Charité University Medicine, Berlin, Germany
3. Department of Epidemiology and Biostatistics, Amsterdam Rheumatology and Immunology Center, Amsterdam University Medical Centers, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
4. Faculty of Medicine, University of Coimbra, Coimbra, Portugal
5. Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal