@article{ref1,
title="Ethnicity and hip fracture",
journal="American journal of public health",
year="1987",
author="Gaffikin, L. and Marut, E. and Blumenthal, P. D.",
volume="77",
number="3",
pages="369-369",
abstract="Abstract unavailable.",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}