Name	Info	Provider	Link
Endoscopy	free resource	MedlinePlus Health Information	https://medlineplus.gov/endoscopy.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33622427/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33622427
	subscription/membership/fee required	Cambridge University Press	https://www.cambridge.org/core/product/identifier/S002221512100061X/type/journal_article
	free resource	scite Smart Citations	https://scite.ai/reports/33622427