@article{ref1,
title="Surveillance in occupational illness and injury: concepts and content",
journal="American journal of public health",
year="1989",
author="Fine, L. J. and Honchar, P. A. and Baker, Ernest L.",
volume="79",
number="Suppl",
pages="9-11",
abstract="Abstract unavailable.",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}