[1] Univ Pavia, Sez Nucribuik, Dipartimento Sci Morfol Eidol & Clin, I-27100 Pavia, Italy
[2] IRCCS S Matteo, Serv Anal Microbiol, I-27100 Pavia, Italy
[3] Univ Siena, Dipartimento Biol Mol, Sez Microbiol, I-53100 Siena, Italy
[4] Univ Aquila, Dipartimento Sci & Tecnol BIomed, I-67100 Laquila, Italy
[5] Yonsei Univ, Coll Med, Dept Clin Pathol, Seoul 120749, South Korea
[6] Yonsei Univ, Coll Med, Res Inst Bacterial Resistance, Seoul 120749, South Korea