[1] UNIV TEXAS,MD ANDERSON CANC CTR,DEPT HEAD & NECK SURG,1515 HOLCOMBE BLVD,HOUSTON,TX 77030
[2] ABBOTT LABS,THROMBOLYT VENTURE GRP,CHICAGO,IL
[3] UNIV MILAN,DEPT GENET MICROBIOL,I-20122 MILAN,ITALY
[4] UNIV TEXAS,MD ANDERSON CANC CTR,DEPT TUMOR BIOL,HOUSTON,TX 77030
[5] UNIV TEXAS,MD ANDERSON CANC CTR,DEPT PATHOL,HOUSTON,TX 77030