1. Department of Rheumatology
2. Department of Medical Genetic, Centro Hospitalar e Universitário de Coimbra
3. Faculty of Medicine, University of Coimbra , Coimbra, Portugal
4. Rare Diseases Research Group, Molecular (Epi)Genetics Laboratory, Bioaraba Health Research Institute, Araba University Hospital-Txagorritxu , Vitoria-Gasteiz, Spain