1 Department of Internal Medicine, Systemic Autoimmune Diseases Unit, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona, 3rd floot, Hospital General Vall d'Hebron building, Passeig de la Vall d'Hebron 119-129, 08035, Barcelona, Spain. andreu.fernandez@vhebron.net.
2 Department of Internal Medicine, Systemic Autoimmune Diseases Unit, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona, 3rd floot, Hospital General Vall d'Hebron building, Passeig de la Vall d'Hebron 119-129, 08035, Barcelona, Spain.
3 Cardiology Department, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona, Barcelona, Spain.
4 Nuclear Medicine Department, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona, Barcelona, Spain.
5 Agencia de Evaluación de Tecnologías Sanitarias, Instituto de Salud Carlos III, Madrid, Spain.