Name	Info	Provider	Link
	free resource	Nature Publishing Group	https://doi.org/10.1002/j.1460-2075.1994.tb06260.x
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/8313873/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/8313873
	free resource	Wiley	https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0261-4189&date=1994&volume=13&issue=2&spage=279