@article{ref1,
title="Public health focus: effectiveness of disease and injury prevention. 1992",
journal="MMWR: Morbidity and mortality weekly report",
year="1997",
author="Centers for Disease Control and Prevention, USA, ",
volume="46",
number="4",
pages="73-76",
abstract="Abstract unavailable.",
language="en",
issn="0149-2195",
doi="",
url="http://dx.doi.org/"
}