1 Lupus Clinic, Rheumatology, Department of Clinical, Internal, Anesthesiologic and Cardiovascular, Sciences, Sapienza University of Rome, Rome, Italy.
2 Lupus Clinic, Rheumatology, Department of Clinical, Internal, Anesthesiologic and Cardiovascular, Sciences, Sapienza University of Rome, Rome, Italy. Electronic address: claudia.ciancarella@uniroma1.it.