Name	Info	Provider	Link
	free resource	CDC-NCEZID	https://doi.org/10.3201/eid2307.170262
Diphtheria	free resource	MedlinePlus Health Information	https://medlineplus.gov/diphtheria.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/28628446/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/28628446
	free resource	scite Smart Citations	https://scite.ai/reports/28628446