@article{:/content/journals/10.22233/20412495.0617.4, author = "Bradbrook, Carl", title = "Ask the expert", journal = "BSAVA Companion", year = "2017", volume = "2017", number = "6", eid = , pages = "4-7", url = "https://www.bsavalibrary.com/content/journals/10.22233/20412495.0617.4", doi = "https://doi.org/10.22233/20412495.0617.4" }