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	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=1389-2002&volume=4&issue=3&spage=185&aulast=van Montfoort
Medicines	free resource	MedlinePlus Health Information	https://medlineplus.gov/medicines.html
	subscription/membership/fee required	Bentham Science Publishers Ltd.	https://www.eurekaselect.com/63557/article
Cited by Patents in	free resource	The Lens - Patent Citations Database	https://www.lens.org/lens/search/patent/list?q=reference_cited.nlp.ids.pmid:12769665