1. Centro Universitário Lusíada, Santos, Brazil
2. Department of Head and Neck Surgery, Hospital das Clínicas, São Paulo School of Medicine, São Paulo, and the Department of Head and Neck Surgery, Hospital Ana Costa, Santos and Irmandade da Santa Casa de Misericórdia, Santos, Brazil
3. Department of Head and Neck Surgery, Hospital Ana Costa, Santos and Irmandade Santa Casa de Misericórdia, Santos, Brazil
4. Brazilian Medical Association and Federal Council of Medicine, Evidence Based Medicine, School of Medical Sciences of Santos - UNILUS, Santos, Brazil
5. Department of Head and Neck Surgery, São Paulo School of Medicine, University of São Paulo, São Paulo, Brazil
6. Department of Head and Neck Surgery, São Paulo School of Medicine, University of São Paulo, São Paulo, Brazil, and the Department of Head and Neck Surgery, Hospital Ana Costa, Santos and Irmandade da Santa Casa de Misericórdia, Santos, Brazil