Name	Info	Provider	Link
	free resource	International Brazilian J Urol	http://www.intbrazjurol.com.br/pdf/vol42n04/Tobias-Machado_853_854.pdf
Endoscopy	free resource	MedlinePlus Health Information	https://medlineplus.gov/endoscopy.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/27564304/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/27564304
	free resource	scite Smart Citations	https://scite.ai/reports/27564304