Physical activity and risks of proximal and distal colon cancers: a systematic review and meta-analysis.
J Natl Cancer Inst. 2012 Oct 17;104(20):1548-61. doi: 10.1093/jnci/djs354. Epub 2012 Aug 22.
J Natl Cancer Inst. 2012.
PMID: 22914790
Review.