Neoplasms, Squamous Cell

• Norwich and Norfolk Hospitals Trust — Norwich, United Kingdom
• University Hospitals Dorset — Poole, United Kingdom
• Surrey and Sussex Hospital Trust — Redhill, United Kingdom

• UC Irvine - Chao Family Comprehensive Cancer Center — Irvine, California, United States
• UC Davis Comprehensive Cancer Center — Sacramento, California, United States
• UC San Francisco - Helen Diller Family Comprehensive Cancer Center — San Francisco, California, United States
• Moffitt Cancer Center — Tampa, Florida, United States

• Institut de Cancérologie de l'Ouest - Site Paul Papin — Angers, France
• Institut Bergonié — Bordeaux, France
• Centre François Baclesse — Caen, France
• Centre Jean Perrin — Clermont-Ferrand, France

• Augusta, Georgia, United States
• Charlottesville, Virginia, United States

• Nantes University Hospital — Nantes, France

• St. Joseph Heritage Healthcare - Virginia K. Crosson Cancer Center — Anaheim, California, United States
• UC Irvine — Orange, California, United States
• Rocky Mountain Cancer Centers, LLP — Denver, Colorado, United States
• IACT Health - John B. Amos Cancer center — Columbus, Georgia, United States

• University of Alabama at Birmingham — Birmingham, Alabama, United States
• Loma Linda University Cancer Institute — Loma Linda, California, United States
• Moffitt Cancer Center — Tampa, Florida, United States
• Mountain States Tumor Institute — Boise, Idaho, United States

• Honor Health Research Institute — Scottsdale, Arizona, United States
• City of Hope — Duarte, California, United States
• UC Irvine - Chao Family Comprehensive Cancer Center — Orange, California, United States
• UC Davis Comprehensive Cancer Center — Sacramento, California, United States

Not specified

• VA Palo Alto Health Care System, Palo Alto, CA — Palo Alto, California, United States
• VA San Diego Healthcare System, San Diego, CA — San Diego, California, United States
• VA Eastern Colorado Health Care System, Denver, CO — Denver, Colorado, United States
• Bay Pines VA Healthcare System, Pay Pines, FL — Bay Pines, Florida, United States