Citation:Chao A, Thun MJ, Jacobs EJ, Henley SJ, Rodriguez C, Calle EE 2000
From National Cancer Control Policy
Chao A, Thun MJ, Jacobs EJ, Henley SJ, Rodriguez C, Calle EE. Cigarette smoking and colorectal cancer mortality in the cancer prevention study II. J Natl Cancer Inst 2000 Dec 6;92(23):1888-96 Available from: http://www.ncbi.nlm.nih.gov/pubmed/11106680.
Critical appraisals