RT Journal Article SR Electronic T1 Ernest Amory Codman MD JF Quality and Safety in Health Care JO Qual Saf Health Care FD BMJ Publishing Group Ltd SP 104 OP 105 DO 10.1136/qhc.11.1.104 VO 11 IS 1 A1 D Neuhauser YR 2002 UL http://qualitysafety.bmj.com/content/11/1/104.abstract AB