@incollection{:/content/chapter/10.22233/9781910443620.chap3, author = "Hall, Edward J.", title = "Flexible endoscopy: basic technique", booktitle = "BSAVA Manual of Canine and Feline Endoscopy and Endosurgery", publisher = "British Small Animal Veterinary Association", year = "2020", pages = "31-46", url = "https://www.bsavalibrary.com/content/chapter/10.22233/9781910443620.chap3" }