RT Journal Article SR Electronic T1 Equity concerns in market-based control schemes for patient safety JF Quality and Safety in Health Care JO Qual Saf Health Care FD BMJ Publishing Group Ltd SP 88 OP 90 DO 10.1136/qshc.2008.030361 VO 18 IS 2 A1 Marshall H Chin A1 Abigail E Wilkes YR 2009 UL http://qualitysafety.bmj.com/content/18/2/88.abstract AB