@article{ref1,
title="Investigation on acute ammonia poisoning accidents",
journal="Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi",
year="2007",
author="Zhou, Qun-xin and Sun, Ya-qiang and Cheng, Xiao-Long",
volume="25",
number="5",
pages="308-308",
abstract="<p>[Abstract unavailable]</p> <p>Language: zh</p>",
language="zh",
issn="1001-9391",
doi="",
url="http://dx.doi.org/"
}