Name	Info	Provider	Link
	subscription/membership/fee required	International Union of Crystallography	http://scripts.iucr.org/cgi-bin/paper?S1744309110039059
Norovirus Infections	free resource	MedlinePlus Health Information	https://medlineplus.gov/norovirusinfections.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21045318/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21045318