@article{ref1,
title="Bicycle safety helmets",
journal="New England journal of medicine",
year="1989",
author="",
volume="321",
number="17",
pages="1194-1196",
abstract="A discussion of the benefits of wearing bicycle helmets.  <p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}