%0 Journal Article %B BMJ Qual Saf %D 2013 %G eng %N 4 %P 273-7 %R 10.1136/bmjqs-2013-001935 %T Trends in adverse events over time: why are we not improving? %V 22 %1 https://www.ncbi.nlm.nih.gov/pubmed/23509344 %8 04/2013