1. Department of Radiation and Cellular Oncology, University of Chicago Medical Center, Chicago, Illinois2Department of Radiation Oncology, University of Illinois at Chicago Medical Center, Chicago
2. Department of Radiation Oncology, University of Illinois at Chicago Medical Center, Chicago
3. Department of Otolaryngology–Head and Neck Surgery, University of Illinois at Chicago Medical Center, Chicago
4. Department of Oral and Maxillofacial Surgery, University of Illinois at Chicago Medical Center, Chicago