Colonic Neoplasms

• Research Site — Stockton, California, United States
• Research Site — Boynton Beach, Florida, United States
• Research Site — Wichita, Kansas, United States
• Research Site — Temple, Texas, United States

• Veterans Affairs Palo Alto Health Care System — Palo Alto, California, United States

• Valley Endoscopy Center — Saint Clairsville, Ohio, United States
• Wintersville Endoscopy Center, Wintersville — Wintersville, Ohio, United States
• West Virginia University School of Medicine - Davis Medical Center — Elkins, West Virginia, United States
• West Virginia University School of Medicine - Reynolds Memorial Hospital — Glendale, West Virginia, United States

• Bispebjerg University Hospital — Copenhagen, Denmark
• Herlev University Hospital — Herlev, Denmark
• Hvidovre University Hospital — Hvidovre, Denmark
• Zealand University Hospital — Køge, Denmark

• Herlev and Gentofte Hospital — Herlev, Region H, Denmark

• Temple University — Philadelphia, Pennsylvania, United States

• University of California San Francisco — San Francisco, California, United States

• Dongguan Shipai Hospital — Dongguan, Guangdong, China

• Kaiser Permanente Division of Research — Oakland, California, United States
• Dana Farber Cancer Institute — Boston, Massachusetts, United States
• Penn State Cancer Institute — Hershey, Pennsylvania, United States

Not specified