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.2010.049783 VO 19 IS 6 A1 David P Stevens YR 2010 UL http://qualitysafety.bmj.com/content/19/6/i.abstract AB