%0 Journal Article %A Perminder S Phull %T Urgent upper gastrointestinal endoscopy referrals cancelled due to the COVID-19 pandemic %D 2020 %R 10.7861/clinmed.Let.20.6.1 %J Clinical Medicine %P e278-e278 %V 20 %N 6 %U https://www.rcpjournals.org/content/clinmedicine/20/6/e278.1.full.pdf