Rectal Neoplasms

• Stavanger University Hospital — Stavanger, Rogaland, Norway
• Ålesund Hospital — Ålesund, Norway
• Nordland Hospital, Bodø — Bodø, Norway
• Innlandet Hospital Trust, Gjøvik — Gjøvik, Norway

• Mobile Infirmary Medical Center — Mobile, Alabama, United States
• Foundation for Cancer Research and Education — Phoenix, Arizona, United States
• Enloe Cancer Center at Enloe Medical Center — Chico, California, United States
• Saint Agnes Medical Center — Fresno, California, United States

• Cancer Institute of New Jersey at UMDNJ - Robert Wood Johnson Medical School — New Brunswick, New Jersey, United States

• Beth Israel Medical Center - Philipps Ambulatory Care Center — New York, United States

• Lombardi Comprehensive Cancer Center at Georgetown University Medical Center — Washington D.C., District of Columbia, United States
• H. Lee Moffitt Cancer Center and Research Institute at University of South Florida — Tampa, Florida, United States
• Duke Comprehensive Cancer Center — Durham, North Carolina, United States
• Wake Forest University Baptist Medical Center — Winston-Salem, North Carolina, United States

• Case Medical Center, University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center — Cleveland, Ohio, United States

• Cancer Care of Western North Carolina — Asheville, North Carolina, United States
• Moses Cone Regional Cancer Center at Wesley Long Community Hospital — Greensboro, North Carolina, United States
• Leo W. Jenkins Cancer Center at ECU Medical School — Greenville, North Carolina, United States
• Rex Cancer Center at Rex Hospital — Raleigh, North Carolina, United States

• Hospital Universitario de Fuenlabrada — Fuenlabrada, Madrid, Spain
• Hospital Madrid Norte Sanchinarro — Madrid, Spain

• Case Medical Center, University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center — Cleveland, Ohio, United States

Not specified