@article{ref1,
title="The use of placebo controls",
journal="New England journal of medicine",
year="1995",
author="Pohl, R. and Balon, R.",
volume="332",
number="1",
pages="61; author reply 62-61; author reply 62",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}