Name	Info	Provider	Link
Sexually Transmitted Infections	free resource	MedlinePlus Health Information	https://medlineplus.gov/sexuallytransmittedinfections.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34564796/
	subscription/membership/fee required	Springer	https://doi.org/10.1007/s10654-021-00809-6
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34564796