Citation:Giovannucci E 2001
From National Cancer Control Policy
Giovannucci E. An updated review of the epidemiological evidence that cigarette smoking increases risk of colorectal cancer. Cancer Epidemiol Biomarkers Prev 2001 Jul;10(7):725-31 Available from: http://www.ncbi.nlm.nih.gov/pubmed/11440957.
Critical appraisals