1. Australian National Prescribing Service Indicators of Quality Prescribing in Australian General Practice http://www.nps.org.au
2. Explicit criteria for determining potentially inappropriate medication use by the elderly. An update;Beers;Arch Intern Med,1997
3. Development of indicators for assessing the quality of prescribing of lipid-lowering drugs: data from the pharmacotherapeutic quality circles in Hesse, Germany;Schubert;Int J Clin Pharmacol Ther,2001
4. National Committee for Quality Assurance (NCQA) HEDIS 2007 http://web ncqa.org
5. NHS Health and Social Care Information Centre (HSCIC) Quality and outcomes framework guidance http://www.bmaorg.uk/employmentandcontracts/independent_contractors/quality_outcomes_framework/qof06.jsp