Head and Neck Neoplasms

• Veterans Affairs Medical Center - Palo Alto — Palo Alto, California, United States
• Stanford University Medical Center — Stanford, California, United States
• H. Lee Moffitt Cancer Center and Research Institute — Tampa, Florida, United States
• Emory University Hospital - Atlanta — Atlanta, Georgia, United States

• Veterans Affairs Medical Center - Palo Alto — Palo Alto, California, United States
• Stanford University Medical Center — Stanford, California, United States
• H. Lee Moffitt Cancer Center and Research Institute — Tampa, Florida, United States
• Emory University Hospital - Atlanta — Atlanta, Georgia, United States

• Baptist Cancer Institute - Jacksonville — Jacksonville, Florida, United States
• Watson Clinic, LLC — Lakeland, Florida, United States
• Robert H. Lurie Comprehensive Cancer Center at Northwestern University — Chicago, Illinois, United States
• Hematology and Oncology Associates — Chicago, Illinois, United States

• University of Alabama at Birmingham Comprehensive Cancer Center — Birmingham, Alabama, United States
• CCOP - Mayo Clinic Scottsdale Oncology Program — Scottsdale, Arizona, United States
• City of Hope Comprehensive Cancer Center — Duarte, California, United States
• Veterans Affairs Medical Center - Palo Alto — Palo Alto, California, United States

Not specified

• Odense University Hospital — Odense C, Southern Denmark Region, Denmark

• UPMC Hillman Cancer Center - Radiation Oncology — Pittsburgh, Pennsylvania, United States

• University of North Carolina at Chapel Hill, Department of Radiation Oncology — Chapel Hill, North Carolina, United States

• Assistance Publique Hôpitaux de Marseille — Marseille, France

• University of Wisconsin Carbone Cancer Center — Madison, Wisconsin, United States