We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleColorectal cancer: evidence for distinct genetic categories based on proximal or distal tumor location.AuthorsBufill JAPublicationAnnals of internal medicine, 1990, Vol 113, Issue 10, p779ISSN0003-4819Publication typearticleDOI10.7326/0003-4819-113-10-779