1. Department of Medical Imagings, Hematology and Oncology, Ribeirão Preto Medical School University of São Paulo (FMRP‐USP) Ribeirão Preto Brazil
2. Latin America Cooperative Oncology Group (LACOG) Porto Alegre Brazil
3. Division of Radiation Oncology, Department of Oncology, Kingston General Hospital Queen's University Kingston Ontario Canada
4. Department of Radiation Oncology Hospital Sirio Libanês São Paulo Brazil
5. Department of Head and Neck Surgery and Otorhinolaryngology AC Camargo Cancer Center (ACCCC) Sao Paulo Brazil
6. Department of Head and Neck Surgery, São Paulo State Cancer Institute (ICESP), School of Medicine University of São Paulo (USP) São Paulo Brazil
7. Department of Radiation Oncology Americas Centro de Oncologia Integrado Rio de Janeiro Brazil