[1] Fdn IRCCS Policlin San Matteo, Immunohematol & Transfus Serv, Pavia, Italy
[2] Fdn IRCCS Policlin San Matteo, Mol Virol Unit, Pavia, Italy
[3] Univ Pavia, Dept Clin Surg Diagnost & Pediat Sci, Pavia, Italy
[4] Carlo Poma Hosp, Immunohematol & Transfus Serv, Mantua, Italy
[5] Fdn IRCCS Policlin San Matteo, Infect Dis 1, Pavia, Italy
[6] Fdn IRCCS Policlin San Matteo, Clin Epidemiol & Biometry Unit, Pavia, Italy