1. Case Western Reserve University School of Medicine, Cleveland, OH, USA
2. Head and Neck Institute, Cleveland Clinic, Cleveland, OH, USA
3. Department of Pathology, Cleveland Clinic, Cleveland, OH, USA
4. Section of Head and Neck Surgical Oncology, Head and Neck Institute, Cleveland Clinic, Cleveland, OH, USA
5. Department of Otolaryngology – Head & Neck Surgery, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, OH, USA