Name	Info	Provider	Link
Gastrointestinal Bleeding	free resource	MedlinePlus Health Information	https://medlineplus.gov/gastrointestinalbleeding.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31190204/
	subscription/membership/fee required	Springer	https://doi.org/10.1007/s10620-019-05683-7
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31190204