Submitted on: 24 August 2000.
Revised on: 26 September 2000.
Accepted on: 17 October 2000.
PUBLIC HEALTH
Submitted on: 17 August 2015.
Revised on: 21 September 2015.
Accepted on: 04 October 2015.
PUBLIC HEALTH
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Submitted on: 21 August 2018.
Revised on: 02 October 2018.
Accepted on: 24 October 2018.
PUBLIC HEALTH
Submitted on: 24 May 2021.
Revised on: 06 July 2021.
Accepted on: 03 August 2021.
PUBLIC HEALTH---W B SAUNDERS CO LTD
http://reply.papertrans.cn/3/258/25769/25769-26.png
Submitted on: 25 March 2011.
Revised on: 05 May 2011.
Accepted on: 14 May 2011.
PUBLIC HEALTH
http://reply.papertrans.cn/3/258/25769/25769-28.png
Submitted on: 02 October 1999.
Revised on: 04 November 1999.
Accepted on: 11 November 1999.
PUBLIC HEALTH
Submitted on: 02 May 2017.
Revised on: 18 May 2017.
Accepted on: 26 May 2017.
PUBLIC HEALTH