Name	Info	Provider	Link
	free resource	Baishideng Publishing Group Inc.	https://www.wjgnet.com/1007-9327/full/v10/i3/415.htm
Bile Duct Cancer	free resource	MedlinePlus Health Information	https://medlineplus.gov/bileductcancer.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/14760769/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/14760769