Name	Info	Provider	Link
Cough	free resource	MedlinePlus Health Information	https://medlineplus.gov/cough.html
	free resource	Public Library of Science	https://dx.plos.org/10.1371/journal.pone.0034818
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22536332/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/22536332