Innovation in the imaging of perianal fistula: a step towards personalised medicine oleh Kapil Sahnan, Samuel O. Adegbola, Philip J. Tozer, Uday Patel, Rajpandian Ilangovan, Janindra Warusavitarne, Omar D. Faiz, Ailsa L. Hart, Robin K. S. Phillips, Phillip F. C. Lung