RT Journal Article SR Electronic T1 Pasteur and parachutes: when statistical process control is better than a randomized controlled trial JF Quality and Safety in Health Care JO Qual Saf Health Care FD BMJ Publishing Group Ltd SP 140 OP 143 DO 10.1136/qshc.2005.013763 VO 14 IS 2 A1 M Diaz A1 D Neuhauser YR 2005 UL http://qualitysafety.bmj.com/content/14/2/140.abstract AB