@article{ref1,
title="Workers' perception of the changes of work environment and its relation to the occurrence of work-related musculoskeletal disorders",
journal="Journal of occupational health",
year="2007",
author="Lee, Yun-Keun and Park, Hee-Sok",
volume="49",
number="2",
pages="152-154",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1341-9145",
doi="",
url="http://dx.doi.org/"
}