Name	Info	Provider	Link
	subscription/membership/fee required	Chinese Medical Association Publishing House Ltd.	https://www.yiigle.com/LinkIn.do?linkin_type=pubmed&issn=0376-2491&year=2013&vol=93&issue=24&fpage=1872
Flu	free resource	MedlinePlus Health Information	https://medlineplus.gov/flu.html