RT Journal Article SR Electronic T1 Quality lines JF Quality and Safety in Health Care JO Qual Saf Health Care FD BMJ Publishing Group Ltd SP i OP i DO 10.1136/qshc.2009.036996 VO 18 IS 5 A2 David P Stevens YR 2009 UL http://qualitysafety.bmj.com/content/18/5/i.abstract AB