@article{ref1,
title="Authors defend methods used in their paper",
journal="British medical journal: BMJ",
year="1999",
author="Jacobson, B. and Bygdeman, M.",
volume="318",
number="7185",
pages="737-737",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}