RT Journal Article SR Electronic T1 Rethinking standardised infection rates and risk adjustment in the COVID-19 era JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP bmjqs-2020-012074 DO 10.1136/bmjqs-2020-012074 A1 Hojjat Salmasian A1 Jennifer Beloff A1 Marc P Pimentel A1 Andrew Resnick A1 Chanu Rhee A1 Meghan A Baker A1 Michael Klompas YR 2021 UL http://qualitysafety.bmj.com/content/early/2021/01/08/bmjqs-2020-012074.abstract AB