Psychometric analysis of the modified COVID-19 Yorkshire Rehabilitation Scale (C19-YRSm) in a prospective multicentre study - Smith, A; Greenwood, D; Horton, M; Osborne, T; Goodwin, M; Lawrence, RR; Winch, D; Williams, P; Milne, R; Sivan, M; de Lusignan, S (BMJ Open Respiratory Research, 2024)