Anus Neoplasms

• Notre-Dame Hospital (Centre Hospitalier de l'Université de Montréal) — Montreal, Quebec, Canada
• Royal Victoria Hospital (McGill University Health Center) — Montreal, Quebec, Canada

• Holden Comprehensive Cancer Center — Iowa City, Iowa, United States

• Arizona Oncology - Tucson — Tucson, Arizona, United States
• Auburn Radiation Oncology — Auburn, California, United States
• Providence Saint Joseph Medical Center - Burbank — Burbank, California, United States
• Radiation Oncology Centers - Cameron Park — Cameron Park, California, United States

• Research Center — San Francisco, California, United States
• Research Center — Orlando, Florida, United States
• Research Center — Chicago, Illinois, United States
• Research Center — New York, United States

• CHU — Caen, France
• Centre François Baclesse — Caen, France

Not specified

• Albert Einstein Comprehensive Cancer Center — The Bronx, New York, United States

• Churchill Hospital — Oxford, United Kingdom

• Hospital Universitario Germans Trias i Pujol. Institut Català Oncologia — Badalona, Barcelona, Spain
• Corporació Sanitaria Parc Taulí — Sabadell, Barcelona, Spain
• Hospital Infanta Sofía — San Sebastián de los Reyes, Madrid, Spain
• Centro Oncológico de Galicia — A Coruña, Spain

• Groupe Hospitalier Paris Saint Joseph — Paris, Île-de-France Region, France