1. Cleveland Clinic Lerner College of Medicine of Case Western Reserve University Cleveland Ohio USA
2. Head and Neck Institute Cleveland Clinic Cleveland Ohio USA
3. Department of Radiation Oncology Taussig Cancer Institute, Cleveland Clinic Cleveland Ohio USA
4. Department of Pathology Pathology & Laboratory Medicine Institute, Cleveland Clinic Cleveland Ohio USA
5. Department of Hematology & Oncology Taussig Cancer Institute, Cleveland Clinic Cleveland Ohio USA