@article{ref1,
title="Chemical poisoning",
journal="MMWR: Morbidity and mortality weekly report",
year="1957",
author="Centers for Disease Control and Prevention, USA, ",
volume="6",
number="3",
pages="1-1",
abstract="The Los Angeles City (California) Health Department has reported 2 cases of chemical poisoning. These persons became ill with nausea and vomiting within 15 minutes after drinking from a bulk vending machine. An investigation revealed that a defective carbonator valve permitted carbon dioxide to back up into a copper waterline. Chemical analysis of water from the carbonator showed 260 p.p.m. of copper.",
language="en",
issn="0149-2195",
doi="",
url="http://dx.doi.org/"
}