@article{ref1,
title="Changes in body weight and incidence of hip fracture among middle aged Norwegians",
journal="British medical journal: BMJ",
year="1995",
author="Meyer, H. E. and Tverdal, A. and Falch, J. A.",
volume="311",
number="6997",
pages="91-92",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}