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Submitted on: 01 January 2005.
Revised on: 10 February 2005.
Accepted on: 05 March 2005.
Lancet Public Health---ELSEVIER SCI LTD
Submitted on: 22 April 2019.
Revised on: 27 May 2019.
Accepted on: 08 June 2019.
Lancet Public Health
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http://reply.papertrans.cn/3/206/20510/20510-25.png
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Submitted on: 08 June 2001.
Revised on: 15 July 2001.
Accepted on: 29 July 2001.
Lancet Public Health
Submitted on: 26 April 2012.
Revised on: 18 May 2012.
Accepted on: 30 May 2012.
Lancet Public Health---ELSEVIER SCI LTD
Submitted on: 05 April 2020.
Revised on: 11 May 2020.
Accepted on: 28 May 2020.
Lancet Public Health---ELSEVIER SCI LTD