NCI National Clinical Trials Network (NCTN) Groups
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NCI National Clinical Trials Network (NCTN) Groups

NRG Oncology
https://www.nrgoncology.org/

Children's Oncology Group (COG)
http://www.childrensoncologygroup.org/

Alliance for Clinical Trials in Oncology
https://www.allianceforclinicaltrialsinoncology.org/main/public/index.xhtml

ECOG-ACRIN Cancer Research Group
http://ecog-acrin.org/

Southwest Oncology Group (SWOG)
http://swog.org/

National Cancer Institute of Canada Clinical Trials Group (NCIC CTG)
http://www.ctg.queensu.ca/

The Coalition of National Cancer Cooperative Groups Inc.
http://www.cancertrialshelp.org/