http://reply.papertrans.cn/3/244/24319/24319-31.png
Submitted on: 20 October 2004.
Revised on: 19 November 2004.
Accepted on: 01 December 2004.
Perspectives in Public Health---SAGE PUBLICATIONS LTD
Submitted on: 03 November 1998.
Revised on: 30 November 1998.
Accepted on: 25 December 1998.
Perspectives in Public Health---SAGE PUBLICATIONS LTD
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http://reply.papertrans.cn/3/244/24319/24319-35.png
Submitted on: 24 May 2001.
Revised on: 01 July 2001.
Accepted on: 09 July 2001.
Perspectives in Public Health