[1] Univ Insubria, Nephrol Dept, ASST Sette Laghi, I-21100 Varese, Italy
[2] Univ Insubria, Dept Med & Technol Innovat, I-21100 Varese, Italy
[3] Univ Insubria, Dept Med & Surg, I-21100 Varese, Italy
[4] Mediterranea Cardioctr, I-80122 Naples, Italy
[5] ASST Sette Laghi, Lab Microbiol, I-21100 Varese, Italy
[6] IRCCS, Lab Virol, Natl Inst Infect Dis L Spallanzani, I-00149 Rome, Italy