@article{ref1,
title="Know your limitations: not just for clinicians. Estimation of confidence intervals is not straightforward",
journal="Journal of public health medicine",
year="1999",
author="Newcombe, R. G.",
volume="21",
number="4",
pages="481-482",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0957-4832",
doi="",
url="http://dx.doi.org/"
}