[1] Hosp Prato, Azienda USL Toscana Ctr, Dept Rheumatol, Prato, Italy
[2] Hosp Prato, Azienda USL Toscana Ctr, Sanit Direct, Prato, Italy
[3] Hosp Prato, Azienda USL Toscana Ctr, Div Internal Med 2, Prato, Italy
[4] Hosp Prato, Azienda USL Toscana Ctr, Div Infect Dis, Prato, Italy
[5] Santa Maria Nuova Hosp, Azienda USL Toscana Ctr, Dept Med Specialties, Div Internal Med, Florence, Italy
[6] Hosp Pistoia, Azienda USL Toscana Ctr, Div Infect Dis, Pistoia, Italy
[7] AO SS Antonio & Biagio & C Arrigo, Rheumatol Unit, Alessandria, Italy
[8] Osped Riuniti Marche Nord, Azienda Osped, Div Internal Med, Fano Pesaro, Italy
[9] Natl Inst Infect Dis, Clin Epidemiol Unit, Rome, Italy
[10] IRCCS, Clin Div Infect Dis, Natl Inst Infect Dis, Rome, Italy
[11] Univ Sassari, Clin Epidemiol & Med Stat Unit, Dept Med Surg & Expt Sci, Sassari, Italy
[12] IRCCS, Translat Res Unit, Dept Epidemiol & Preclin Res, L Spallanzani Natl Inst Infect Dis INMI, Rome, Italy