[1] UNIV PAVIA,SERV IMMUNOEMATOL & TRASFUS,HLA LAB,I-27100 PAVIA,ITALY
[2] UNIV PAVIA,DIPARTIMENTO GENET & MICROBIOL,I-27100 PAVIA,ITALY
[3] UNIV PADUA,IST MED CLIN,MED CLIN 1A,I-35100 PADUA,ITALY
[4] UNIV PADUA,DIV PNEUMOTISIOL,I-35100 PADUA,ITALY
[5] USL 21,PADUA,ITALY
[6] IRCCS POLICLIN SAN MATTEO,PAVIA,ITALY