Neoplasms, Squamous Cell

• Ironwood Cancer and Research Center — Chandler, Arizona, United States
• Arizona Oncology Associates — Tucson, Arizona, United States
• University of California Irvine Medical Center — Orange, California, United States
• PMK Medical Group, Inc. — Oxnard, California, United States

• Fox Chase Cancer Center — Philadelphia, Pennsylvania, United States

• Cancer Institute/Hospital of Ci County — Handan, Hebei, China

• National Cheng Kung University Hospital — Tainan, Taiwan

Not specified

• University Hospital Ghent — Ghent, Belgium

• State Medical Institution: Republic Scientific Oncology Center — Poselok, Minsk Oblast, Belarus
• Gomel Regional Clinical Oncology Center — Homyel, Belarus
• Minsk City Clinical Oncology Center — Minsk, Belarus
• Vitebsk Regional Clinical Oncology Center — Vitebsk, Belarus

• Roswell Park Cancer Institute — Buffalo, New York, United States

• Univ of Alabama at Birmingham — Birmingham, Alabama, United States
• Children's Hosp of Los Angeles/UCLA Med Ctr — Los Angeles, California, United States
• Univ of Southern California / LA County USC Med Ctr — Los Angeles, California, United States
• Los Angeles County - USC Med Ctr — Los Angeles, California, United States

• CCOP - Scottsdale Oncology Program — Scottsdale, Arizona, United States
• CCOP - Illinois Oncology Research Association — Peoria, Illinois, United States
• CCOP - Carle Cancer Center — Urbana, Illinois, United States
• CCOP - Cedar Rapids Oncology Project — Cedar Rapids, Iowa, United States