@article{ref1,
title="Case definitions for public health surveillance",
journal="MMWR: Recommendations and reports: Morbidity and mortality weekly report. Recommendations and reports / Centers for Disease Control",
year="1990",
author="Vogt, R. L. and Chorba, T. L. and Wharton, M. and Morse, D. L. and Buehler, J. W.",
volume="39",
number="RR-13",
pages="1-43",
abstract="<p>Injuries are not among the case definitions.  Available: http://www.cdc.gov/mmwr/preview/mmwrhtml/00025629.htm</p> <p>Language: en</p>",
language="en",
issn="1057-5987",
doi="",
url="http://dx.doi.org/"
}