@article{ref1,
title="Pasteur and parachutes: when statistical process control is better than a randomized controlled trial",
journal="Quality and safety in health care",
year="2005",
author="Diaz, M. and Neuhauser, D.",
volume="14",
number="2",
pages="140-143",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1475-3898",
doi="10.1136/qshc.2005.013763",
url="http://dx.doi.org/10.1136/qshc.2005.013763"
}