[1] Univ Campinas UNICAMP, Oral Diag Dept, Semiol Area, Piracicaba Dent Sch, Piracicaba, SP, Brazil
[2] Brigham & Womens Hosp, Div Oral Med & Dent, 75 Francis St, Boston, MA 02115 USA
[3] Harvard Sch Dent Med, Dept Oral Med Infect & Immun, Boston, MA USA
[4] Univ Sao Paulo, Inst Canc Estado Sao Paulo ICESP, Dent Oncol Serv, Fac Med, Sao Paulo, Brazil
[5] Univ Sao Paulo, Inst Canc Estado Sao Paulo ICESP, Psychol Serv, Fac Med, Sao Paulo, Brazil
[6] Univ Talca UTALCA, Oral Med & Pathol Res Grp, Fac Hlth Sci, Talca, Maule Region, Chile