Name	Info	Provider	Link
	subscription/membership/fee required	Chinese Medical Association Publishing House Ltd.	https://www.yiigle.com/LinkIn.do?linkin_type=pubmed&issn=1007-3418&year=2017&vol=25&issue=6&fpage=402
Gastrointestinal Bleeding	free resource	MedlinePlus Health Information	https://medlineplus.gov/gastrointestinalbleeding.html