Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleRe: Case-control studies of colorectal cancer mortality: is the case made for screening sigmoidoscopy?AuthorsSELBY, JOE V.; FRIEDMAN, GARY D.; NEWCOMB, POLLY A.; WEISS, NOEL S.; Selby, J V; Friedman, G D; Newcomb, P A; Weiss, N SPublicationJNCI: Journal of the National Cancer Institute, 1993, Vol 85, Issue 6, p503ISSN0027-8874Publication typeletter