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Submitted on: 13 March 2017.
Revised on: 03 April 2017.
Accepted on: 01 May 2017.
___________________JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
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Submitted on: 23 January 2016.
Revised on: 09 April 2016.
Accepted on: 31 May 2016.
___________________JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
Submitted on: 20 April 2000.
Revised on: 17 August 2000.
Accepted on: 08 October 2000.
___________________JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
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http://reply.papertrans.cn/2/185/18417/18417-18.png
Submitted on: 31 May 2009.
Revised on: 28 July 2009.
Accepted on: 08 September 2009.
___________________JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
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