PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1136/qshc.2007.024323corr1 DP - 2009 Feb 01 TA - Quality and Safety in Health Care PG - 80--80 VI - 18 IP - 1 4099 - http://qualitysafety.bmj.com/content/18/1/80.1.short 4100 - http://qualitysafety.bmj.com/content/18/1/80.1.full SO - Qual Saf Health Care2009 Feb 01; 18