http://reply.papertrans.cn/1/87/8641/8641-11.png
Submitted on: 14 December 2001.
Revised on: 26 February 2002.
Accepted on: 09 April 2002.
___________________Environmental Health and Preventive Medicine
Submitted on: 06 June 2020.
Revised on: 03 September 2020.
Accepted on: 31 October 2020.
___________________Environmental Health and Preventive Medicine
Submitted on: 28 February 2009.
Revised on: 02 April 2009.
Accepted on: 11 May 2009.
___________________Environmental Health and Preventive Medicine
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http://reply.papertrans.cn/1/87/8641/8641-16.png
Submitted on: 02 May 2003.
Revised on: 08 June 2003.
Accepted on: 20 July 2003.
___________________Environmental Health and Preventive Medicine
Submitted on: 14 September 2017.
Revised on: 16 December 2017.
Accepted on: 03 January 2018.
___________________Environmental Health and Preventive Medicine
Submitted on: 18 February 2023.
Revised on: 29 April 2023.
Accepted on: 16 May 2023.
___________________Environmental Health and Preventive Medicine
Submitted on: 03 May 2004.
Revised on: 08 July 2004.
Accepted on: 19 July 2004.
___________________Environmental Health and Preventive Medicine