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BioMed Research International
Volume 2014, Article ID 826757, 10 pages
http://dx.doi.org/10.1155/2014/826757
Research Article

A Cohort Study on Self-Reported Respiratory Symptoms of Toner-Handling Workers: Cross-Sectional and Longitudinal Analysis from 2003 to 2008

1Department of Work Systems and Health, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, 1-1 Iseigaoka Yahatanishi-ward, Kitakyushu 807-8555, Japan
2Department of Haematology, Tokai University School of Medicine, Japan

Received 12 October 2013; Revised 21 January 2014; Accepted 22 January 2014; Published 27 February 2014

Academic Editor: Cheorl-Ho Kim

Copyright © 2014 Hiroko Kitamura et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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