1. Department of Radiation Oncology, King Hussein Cancer Center, Amman, Jordan
2. Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX
3. Department of Medical Oncology, Tata Memorial Hospital, Parel, Mumbai, Homi Bhabha National Institute, Mumbai, India
4. Department of Radiation Oncology, Kuwait Cancer Control Center, Kuwait
5. Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
6. Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
7. Department of Radiation Oncology, University of Toronto, Princess Margaret Cancer Centre, Toronto, ON, Canada