Understanding the Impact of COVID-19 on Angioplasty Service and Outcome of Patients Treated for Chronic Limb-Threatening Ischaemia: A Single-Centre Retrospective Cohort Study gan Alexander D. Rodway, Jenny Harris, Lydia Hanna, Charlotte Allan, Felipe Pazos Casal, Ciara Giltinan, Ali Dehghan-Nayeri, Andre Santos, Martin B. Whyte, Nikolaos Ntagiantas, Ivan Walton, Richard Brown, Simon S. Skene, Ajay Pankhania, Benjamin C. T. Field, Gary D. Maytham, Christian Heiss