Carcinoma, 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

• Icahn School of Medicine at Mount Sinai, Otolaryngology - Head and Neck Surgery — New York, United States

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

• Memorial Sloan-Kettering Cancer Center at Basking Ridge — Basking Ridge, New Jersey, United States
• Memorial Sloan-Kettering Cancer Center at Commack — Commack, New York, United States
• Memorial Sloan-Kettering Cancer Center — New York, United States
• Memorial Sloan-Kettering at Mercy Medical Center — Rockville Centre, New York, United States

• Glauco Issamu Miyahara — Araçatuba, São Paulo, Brazil

• Yale Dermatologic Surgery — New Haven, Connecticut, United States

• Department of Dermatology, Venereology and Allergology, Ruhr-University Bochum — Bochum, North Rhine-Westphalia, Germany

• Northeast Alabama Regional Medical Center — Anniston, Alabama, United States
• Mobile Infirmary Medical Center — Mobile, Alabama, United States
• University of Colorado Cancer Center at University of Colorado Health Sciences Center — Aurora, Colorado, United States
• Veterans Affairs Medical Center - Denver — Denver, Colorado, United States