@article{ref1,
title="Pennsylvania laser regulatory program",
journal="American journal of public health",
year="1972",
author="Baier, E. J. and Chrostek, W. J.",
volume="62",
number="4",
pages="514-515",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}