Carcinoma, Squamous Cell

• Comprehensive Cancer Center at University of Alabama at Birmingham — Birmingham, Alabama, United States
• Mobile Infirmary Medical Center — Mobile, Alabama, United States
• Foundation for Cancer Research and Education — Phoenix, Arizona, United States
• CCOP - Mayo Clinic Scottsdale Oncology Program — Scottsdale, Arizona, United States

• University of California - San Francisco — San Francisco, California, United States
• Miami Cancer Institute — Miami, Florida, United States
• Johns Hopkins University — Baltimore, Maryland, United States
• University of Michigan Rogel Cancer Center — Ann Arbor, Michigan, United States

• Baylor College of Medicine — Houston, Texas, United States
• Michael E. DeBakey Veterans Affairs Medical Center — Houston, Texas, United States
• Harris Health System - Smith Clinic — Houston, Texas, United States

Not specified

• UAB Comprehensive Cancer Center — Birmingham, Alabama, United States
• California Cancer Care, Incorporated - Greenbrae — Greenbrae, California, United States
• Veterans Affairs Medical Center - Palo Alto — Palo Alto, California, United States
• Stanford Cancer Center — Stanford, California, United States

• Århus Kommunehospital — Århus C, Denmark
• Rigshospitalet — Copenhagen Ø, Denmark
• Odense Universitetshospital — Odense, Denmark
• Universitets Sjukhuset i Lund — Lund, Sweden

• Emory University Hospital - Atlanta — Atlanta, Georgia, United States
• Veterans Affairs Medical Center - Atlanta (Decatur) — Decatur, Georgia, United States
• Robert H. Lurie Comprehensive Cancer Center, Northwestern University — Chicago, Illinois, United States
• Veterans Affairs Medical Center - Chicago (Lakeside) — Chicago, Illinois, United States

• Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins — Baltimore, Maryland, United States
• Ireland Cancer Center — Cleveland, Ohio, United States
• Fox Chase Cancer Center — Philadelphia, Pennsylvania, United States
• CCOP - Green Bay — Green Bay, Wisconsin, United States

• Royal Marsden Hospital — Sutton, London, United Kingdom
• Belfast City Hospital — Belfast, Northern Ireland, United Kingdom
• Oxford University Hospitals — Headington, Oxford, United Kingdom
• Velindre Cancer Centre - Cardiff — Cardiff, Whitchurch, United Kingdom

• University of Alabama at Birmingham Comprehensive Cancer Center — Birmingham, Alabama, United States
• Stanford Cancer Center at Stanford University Medical Center — Stanford, California, United States
• Medical Center of Aurora - South Campus — Aurora, Colorado, United States
• Boulder Community Hospital — Boulder, Colorado, United States