[1] Careggi Hosp, Reg Reference Ctr Mycobacteria, Microbiol & Virol Lab, Piastra Serv, I-50134 Florence, Italy
[2] Careggi Hosp, Microbiol & Virol Serum Immunol Lab, I-50134 Florence, Italy
[3] Univ Pisa, Dept Expt Pathol Med Biotechnol Infectivol & Epid, Pisa, Italy
[4] San Bortolo Hosp, Reg Reference Ctr Mycobacteria, Vicenza, Italy