@article{ref1,
title="Control subjects in whiplash studies",
journal="Manual therapy",
year="2003",
author="Kwan, O.",
volume="8",
number="1",
pages="52-3; author reply 54",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1356-689X",
doi="",
url="http://dx.doi.org/"
}