Name	Info	Provider	Link
	subscription/membership/fee required	Chinese Medical Association Publishing House Ltd.	https://www.yiigle.com/LinkIn.do?linkin_type=pubmed&issn=1001-9391&year=2019&vol=37&issue=8&fpage=605
Noise	free resource	MedlinePlus Health Information	https://medlineplus.gov/noise.html