Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0003-2697(98)92930-X
Get Article's Plasmids - Addgene	subscription/membership/fee required	Addgene Non-profit plasmid repository	https://addgene.org/browse/pubmed/9887208
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:9887208