RT Journal Article SR Electronic T1 Is there a ‘best measure’ of patient safety? JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP bmjqs-2019-009730 DO 10.1136/bmjqs-2019-009730 A1 Ann M Borzecki A1 Amy K Rosen YR 2019 UL http://qualitysafety.bmj.com/content/early/2019/10/08/bmjqs-2019-009730.abstract AB