1. Rheumatology Department, Centro Hospitalar do Baixo Vouga , Aveiro, Portugal
2. Rheumatology Department, Hospitais da Universidade de Coimbra, Centro Hospitalar e Universitário de Coimbra , Coimbra, Portugal
3. Rheumatology Department, Centro Hospitalar de Leiria , Leiria, Portugal
4. Faculty of Health Sciences, University of Beira Interior , Covilhã, Portugal
5. Rheumatology Unit, Department of Medicine, University of Padova , Padova, Italy
6. Institute for Clinical and Biomedical Research—ICBR, Faculty of Medicine, University of Coimbra , Coimbra, Portugal