@article{ref1,
title="Nuffield Lecture. Monitoring the National Health Service",
journal="Proceedings of the Royal Society of Medicine",
year="1973",
author="Doll, Richard",
volume="66",
number="8",
pages="729-740",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0035-9157",
doi="",
url="http://dx.doi.org/"
}