%0 Journal Article %B Med Care %D 2011 %G eng %N 5 %P 504-510 %R 10.1097/MLR.0b013e31820fc218 %T Racial disparities in the frequency of patient safety events: results from the National Medicare Patient Safety Monitoring System. %V 49 %1 https://www.ncbi.nlm.nih.gov/pubmed/21494115 %8 05/2011