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/36513105/
	free resource	Georg Thieme Verlag Stuttgart, New York	http://www.thieme-connect.com/DOI/DOI?10.1055/a-1978-7903
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/36513105
Full text from	free resource	Kyoto University Research Information Repository - Articles	http://hdl.handle.net/2433/279495