Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=&volume=49&issue=6&spage=453&aulast=Demir Çuha
Syphilis	free resource	MedlinePlus Health Information	https://medlineplus.gov/syphilis.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=35312664.ui
	subscription/membership/fee required	Wolters Kluwer	https://doi.org/10.1097/OLQ.0000000000001621