[1] Univ Pisa, Traslat Res & New Technol, Pisa, Italy
[2] St Anna Sch Adv Studies, Hlth Sci Res Ctr, Pisa, Italy
[3] Univ Foggia, Dept Med & Surg Sci, Foggia, Italy
[4] Natl Inst Hlth, Dept Infect Dis, Rome, Italy
[5] Natl Inst Hlth, Natl Ctr Dis Prevent, Rome, Italy
[6] Healthcare Reg Agcy, Epidemiol Observ, Florence, Italy
[7] Univ Verona, Dept Human Sci, Verona, Italy