The effect of frailty on survival in patients with COVID-19 (COPE): a multicentre, European, observational cohort study oleh Jonathan Hewitt, FRCP, Ben Carter, PhD, Arturo Vilches-Moraga, FRCP, Terence J Quinn, FRCP, Philip Braude, MRCP, Alessia Verduri, MD, Lyndsay Pearce, FRCS, Michael Stechman, FRCS, Roxanna Short, PhD, Angeline Price, BSc, Jemima T Collins, MRCP, Eilidh Bruce, MBChB, Alice Einarsson, MBChB, Frances Rickard, MRCP, Emma Mitchell, MRCP, Mark Holloway, MBChB, James Hesford, MBChB, Fenella Barlow-Pay, MBChB, Enrico Clini, ProfMD, Phyo K Myint, ProfFRCP, Susan J Moug, ProfFRCS, Kathryn McCarthy, FRCS, Charlotte Davey, Sheila Jones, Kiah Lunstone, Alice Cavenagh, Charlotte Silver, Thomas Telford, Rebecca Simmons, Tarik El Jichi Mutasem, Sandeep Singh, Dolcie Paxton, Will Harris, Norman Galbraith, Emma Bhatti, Jenny Edwards, Siobhan Duffy, Carly Bisset, Ross Alexander, Madeline Garcia, Shefali Sangani, Thomas Kneen, Thomas Lee, Aine McGovern, Giovanni Guaraldi