Name	Info	Provider	Link
	free resource	BioMed Central	https://josr-online.biomedcentral.com/articles/10.1186/s13018-019-1228-4
Allergy	free resource	MedlinePlus Health Information	https://medlineplus.gov/allergy.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31208448/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31208448