%0 Journal Article %A Magrath, Christine %T How to… %D 2021 %J BSAVA Companion %V 2021 %N 7 %P 10-14 %R doi:https://doi.org/10.22233/20412495.0721.10 %U https://www.bsavalibrary.com/content/journals/10.22233/20412495.0721.10