RT Journal Article SR Electronic T1 Applying a systems lens to understand patient safety effectiveness in low-and-middle-income countries JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP 334 OP 336 DO 10.1136/bmjqs-2021-013668 VO 31 IS 5 A1 Kimball, Meredith A1 Wagenaar, Bradley YR 2022 UL http://qualitysafety.bmj.com/content/31/5/334.abstract AB