@book{67102,
	author = {Walsh, Catharine M. and Ahmad, Ahmir},
	title = {Cotton and Williams' Practical Gastrointestinal Endoscopy},
	publisher = {Wiley},
	year = {2023},
	edition = {1},
	url = {https://onlinelibrary.wiley.com/action/showBook?doi=10.1002%2F9781119525127}
}