@article{ref1,
title="Gait velocity and community ambulation: the limits of assessment",
journal="Stroke",
year="2008",
author="Lord, Susan and Rochester, Lynn",
volume="39",
number="4",
pages="e75; author reply e76-e75; author reply e76",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0039-2499",
doi="10.1161/STROKEAHA.107.502203",
url="http://dx.doi.org/10.1161/STROKEAHA.107.502203"
}