Aspirin in Treating Patients With Colorectal Cancer That Has Been Surgically Removed

New York Presbyterian Hospital - Cornell Campus, New York

CCOP - North Shore University Hospital, Manhasset

State University of New York - Upstate Medical University, Syracuse

Marlene & Stewart Greenebaum Cancer Center, University of Maryland, Baltimore

CCOP - Mount Sinai Medical Center, Miami Beach

University of Tennessee, Memphis Cancer Center, Memphis

CCOP - Ann Arbor Regional, Ann Arbor

University of Iowa Hospitals and Clinics, Iowa City

University of Minnesota Cancer Center, Minneapolis

Mayo Clinic Cancer Center, Rochester

CentraCare Clinic, Saint Cloud

Rapid City Regional Hospital, Rapid City

CCOP - Merit Care Hospital, Fargo

Altru Health Systems, Grand Forks

Quain & Ramstad Clinic, P.C., Bismarck

University of Chicago Cancer Research Center, Chicago

CCOP - Illinois Oncology Research Association, Peoria

CCOP - Carle Cancer Center, Urbana

Barnes-Jewish Hospital, St Louis

Ellis Fischel Cancer Center - Columbia, Columbia

CCOP - Missouri Valley Cancer Consortium, Omaha

CCOP - Ochsner, New Orleans

CCOP - Southern Nevada Cancer Research Foundation, Las Vegas

CCOP - Scottsdale Oncology Program, Scottsdale

UCSF Cancer Center and Cancer Research Institute, San Francisco

CCOP - Cedar Rapids Oncology Project, Cedar Rapids

CCOP - Iowa Oncology Research Association, Des Moines

Siouxland Hematology-Oncology, Sioux City

Massachusetts General Hospital Cancer Center, Boston

University of Massachusetts Memorial Medical Center, Worcester

Norris Cotton Cancer Center, Lebanon

Roswell Park Cancer Institute, Buffalo

Lineberger Comprehensive Cancer Center, UNC, Chapel Hill

CCOP - Southeast Cancer Control Consortium, Winston-Salem

Comprehensive Cancer Center of Wake Forest University Baptist Medical Center, Winston-Salem

CCOP - Toledo Community Hospital Oncology Program, Toledo

CCOP - Geisinger Clinical and Medical Center, Danville

Rhode Island Hospital, Providence

CCOP - Sioux Community Cancer Consortium, Sioux Falls

Vermont Cancer Center, Burlington

MBCCOP - Massey Cancer Center, Richmond

Saskatchewan Cancer Agency, Regina