RT Journal Article SR Electronic T1 National adverse event analysis over time: current state and future directions JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP 529 OP 532 DO 10.1136/bmjqs-2020-011965 VO 30 IS 7 A1 Emily L Aaronson A1 David W Bates YR 2021 UL http://qualitysafety.bmj.com/content/30/7/529.abstract AB