PT - JOURNAL ARTICLE AU - David P Stevens TI - Quality lines AID - 10.1136/qshc.2010.043679 DP - 2010 Jun 01 TA - Quality and Safety in Health Care PG - i--i VI - 19 IP - 3 4099 - http://qualitysafety.bmj.com/content/19/3/i.short 4100 - http://qualitysafety.bmj.com/content/19/3/i.full SO - Qual Saf Health Care2010 Jun 01; 19