%0 Journal Article %K Chart Review Methodologies %K Diagnostic Errors %K Medical Error, Measurement/Epidemiology %K Patient Safety %K Trigger Tools %B BMJ Qual Saf %D 2014 %G eng %N 9 %P 727-731 %R 10.1136/bmjqs-2013-002627 %T The frequency of diagnostic errors in outpatient care: estimations from three large observational studies involving US adult populations. %V 23 %1 https://www.ncbi.nlm.nih.gov/pubmed/24742777 %8 09/2014