[1] Univ Campinas FOP UNICAMP, Piracicaba Dent Sch, Oral Diag Dept, Piracicaba, SP, Brazil
[2] Univ Sao Paulo, Head & Neck Surg Dept, Med Sch, Sao Paulo, SP, Brazil
[3] Univ Sao Paulo, LIM 28, Med Sch, Sao Paulo, SP, Brazil
[4] Fed Univ Sao Paulo ICT Unifesp, Inst Sci & Technol, Sao Jose Dos Campos, SP, Brazil
[5] Univ Sao Paulo ICMC USP, Inst Math & Comp Sci, Sao Carlos, SP, Brazil
[6] Univ Sheffield, Sch Clin Dent, Unit Oral & Maxillofacial Pathol, Sheffield, S Yorkshire, England
[7] Univ Chicago, Dept Med, Sect Hemathol Oncol, Chicago, IL USA
[8] Univ Chicago, Comprehens Canc Ctr, Chicago, IL 60637 USA
[9] AC Camargo Canc Ctr, Dept Head & Neck Surg & Otorhinolaryngol, Sao Paulo, SP, Brazil