@article{ref1,
title="Prevention of falls among the elderly",
journal="New England journal of medicine",
year="1989",
author="Tinetti, M. E. and Speechley, Mark",
volume="320",
number="16",
pages="1055-1059",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}