@article{ref1,
title="Measurement of bone mineral density",
journal="Calcified tissue international",
year="1995",
author="Hassager, C. and Christiansen, C.",
volume="57",
number="1",
pages="1-5",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0171-967X",
doi="",
url="http://dx.doi.org/"
}