Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0160-4120(20)32010-9
Colorectal Cancer	free resource	MedlinePlus Health Information	https://medlineplus.gov/colorectalcancer.html
Full Text at the institutional repository	free resource	Andalusian Health Repository	http://hdl.handle.net/10668/16133
Full text from	free resource	Diposit Digital de la Universitat de Barcelona	http://hdl.handle.net/2445/174252