1. Department of Public Health and Infectious Diseases, Rheumatology Unit, Sapienza University of Rome, Rome, Italy
2. Department of Internal Medicine and Medical Specialties, Rheumatology Unit, Sapienza University of Rome, Rome, Italy
3. Department of Infectious Diseases, Leiden University Medical Center, Leiden, the Netherlands
4. Infectious Diseases Unit, Fondazione Eleonora Lorillard Spencer Cenci, Sapienza University of Rome, Latina, Italy