Affiliation: | 1. Systemic Autoimmune Diseases Unit, Vall d’Hebron Institute of Research, Universitat Autònoma de Barcelona, Hospital Universitari Vall d’Hebron, Barcelona, Spain;2. Nuclear Medicine Department, Vall d’Hebron Institute of Research, Universitat Autònoma de Barcelona, Hospital Universitari Vall d’Hebron, Barcelona, Spain |