Name	Info	Provider	Link
Blindness	free resource	Genetic Alliance	https://www.diseaseinfosearch.org/result/877
Vitamin C	free resource	MedlinePlus Health Information	https://medlineplus.gov/vitaminc.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/26055085/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/26055085
	subscription/membership/fee required	Cambridge University Press	https://www.cambridge.org/core/product/identifier/S1368980015001846/type/journal_article