@article{ref1,
title="Randomized clinical trials: why not?",
journal="Controlled clinical trials",
year="1981",
author="Uberla, K. K.",
volume="1",
number="4",
pages="295-303",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0197-2456",
doi="",
url="http://dx.doi.org/"
}