on 25 January 2019.
on 18 October 2018.
on 17 October 2018.
on 26 February 2018.
Harvard Health Letter: 5 simple steps that may help prevent colorectal cancer (2014)
American Cancer Society: Six Ways to Lower Your Risk for Colon Cancer (2017)
Prevent Cancer Foundation
Colorectal Cancer: Preventable, Treatable, Beatable (n.d.)
National Institutes of Health: Cancer is a Preventable Disease that Requires Major Lifestyle Changes (2008)