Links
[1] https://www.ncri.ie/cancers/colorectal
[2] http://www.sciencedirect.com/science/article/pii/S1877782113001896
[3] https://www.ncri.ie/news/article/use-anti-diabetic-drug-metformin-may-be-associated-lower-chances-being-diagnosed
[4] https://www.ncri.ie/research/projects/cappe-cancer-pharmacoepidemiology-pharmacoeconomics