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Participating Studies

Participating Studies 

GECCO projects are possible because of the collaboration of many studies. Please click, below, on the individual study names to find information on contacts, links to websites, and links to questionnaires.

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*Coordinating Center, Fred Hutchinson Cancer Research Center*
Advanced Colorectal Cancer of Serrated Subtype (ACCESS)
ASPirin Intervention for the REDuction of colorectal cancer risk (ASPIRED)
ATBC
Basque Colorectal Cohort
Black Women's Health Study (BWHS)
Campaign against Cancer and Heart Disease II (CLUE II)
Cancer Prevention Study II (CPS-II)
Chicago Colorectal Cancer Consortium (CCCC)
Colon Cancer Family Registry (CCFR)
Colorectal cancer study of Austria (CORSA)
Colorectal cancer: Longitudinal Observational study on Nutritional and lifestyle factors that influence colorectal tumour recurrence, survival and quality of life (COLON-study)
Colorectal Case-Control Study (Colo 2&3)
Columbus-area HNPCC study (HNPCC)
Czech Republic CCS (Czech CCS)
Darmkrebs: Chancen der Verhütung durch Screening (DACHS)
Diet, Activity, and Lifestyle Study (DALS)
Early Detection Research Network (EDRN)
EPICOLON
European Prospective Investigation into Cancer (EPIC)
French Association STudy Evaluation RISK for sporadic colorectal cancer (ASTERISK)
General Cohort of Adults in Norway (HUNT)
Health Professionals Follow-up Study (HPFS)
Leeds Bowel Study (LBS)
Molecular Epidemiology of Colorectal Cancer Study (MECC)
Multiethnic Cohort Study (MEC)
Netherlands Cohort Study (NLCS)
Newfoundland Familial Colorectal Cancer Study (NFCCR)
North Carolina CCS I & II (NCCCS I & II)
North Central German Case-control Study (NGCCS)
Northern Sweden Health and Disease Study (NSHDS)
Nurses’ Health Study (NHS)
Ohio Colorectal Cancer Prevention Initiative (OCCPI)
Ontario Familial Colorectal Cancer Registry (OFCCR)
Physicians’ Health Study (PHS)
Postmenopausal Hormone Study (PMH-CCFR)
Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial (PLCO)
Screening Markers for Colorectal Disease study and Colonoscopy and Health study (SMS-REACH)
Selenium and VItamin E Prevention Trial (SELECT)
VITamin and Lifestyle Study (VITAL)
Women’s Health Initiative (WHI)