@article{:/content/journals/10.22233/20412495.0211.14, author = "Summerfield, Nuala", title = "How to…", journal = "BSAVA Companion", year = "2011", volume = "2011", number = "2", eid = , pages = "14-18", url = "https://www.bsavalibrary.com/content/journals/10.22233/20412495.0211.14", doi = "https://doi.org/10.22233/20412495.0211.14" }