Name	Info	Provider	Link
Free full text from BORIS	free resource	Bern Open Repository and Information System	https://boris.unibe.ch/id/eprint/27924
Measles	free resource	MedlinePlus Health Information	https://medlineplus.gov/measles.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=17899399.ui
	subscription/membership/fee required	Springer	https://doi.org/10.1007/s10654-007-9187-1