%0 Journal Article %B Jt Comm J Qual Patient Saf %D 2011 %G eng %N 1 %P 20-8 %T Designing an abstraction instrument: lessons from efforts to validate the AHRQ patient safety indicators. %V 37 %1 https://www.ncbi.nlm.nih.gov/pubmed/21306062 %8 01/2011