RT Journal Article SR Electronic T1 Failing the frail: the need to broaden the COVID-19 case definition for geriatric patients JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 9 OP 10 DO 10.7861/clinmed.21-2-s9 VO 21 IS Suppl 2 A1 Clare Hunt A1 Flora Olcott A1 Terrence Chan A1 George Williams YR 2021 UL http://www.rcpjournals.org/content/21/Suppl_2/9.abstract