PT - JOURNAL ARTICLE ED - Stevens, David P TI - Quality lines DP - 2009 Apr 01 TA - Quality and Safety in Health Care PG - i--i VI - 18 IP - 2 4099 - http://qualitysafety.bmj.com/content/18/2/i.short 4100 - http://qualitysafety.bmj.com/content/18/2/i.full SO - Qual Saf Health Care2009 Apr 01; 18