1. Department of Radiation Oncology; Mayo Clinic; Rochester Minnesota
2. Department of Otolaryngology; Mayo Clinic; Rochester Minnesota
3. Department of Laboratory Medicine and Pathology; Mayo Clinic; Rochester Minnesota
4. Department of Biomedical Statistics and Informatics; Mayo Clinic; Rochester Minnesota
5. Department of Oral Pathology, School of Dentistry; Federal University Goiás; Goiás Brazil
6. Division of Medical Oncology; Mayo Clinic; Rochester Minnesota