@article{ref1,
title="NIOSH alerts on workplace hazards: falls through skylights and roof openings, deaths of farm workers in manure pits, and exposure to dimethylformamide",
journal="MMWR: Morbidity and mortality weekly report",
year="1991",
author="Centers for Disease Control and Prevention, USA, ",
volume="40",
number="8",
pages="142-143",
abstract="CDC's National Institute for Occupational Safety and Health (NIOSH) periodically issues alerts on workplace hazards that have caused injury, illness, or death to workers. Three alerts are now available about the serious hazards posed by skylights and roof openings, manure pits, and the organic solvent dimethylformamide (DMF). Each alert is summarized briefly below.",
language="en",
issn="0149-2195",
doi="",
url="http://dx.doi.org/"
}