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Submitted on: 21 July 2021.
Revised on: 25 October 2021.
Accepted on: 24 November 2021.
___________________JOURNAL OF PUBLIC HEALTH---OXFORD UNIV PRESS
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Submitted on: 20 March 2024.
Revised on: 12 June 2024.
Accepted on: 02 August 2024.
___________________JOURNAL OF PUBLIC HEALTH---OXFORD UNIV PRESS
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Submitted on: 27 May 2014.
Revised on: 23 August 2014.
Accepted on: 04 October 2014.
___________________JOURNAL OF PUBLIC HEALTH---OXFORD UNIV PRESS
http://reply.papertrans.cn/2/191/19001/19001-28.png
Submitted on: 14 December 2014.
Revised on: 11 March 2015.
Accepted on: 29 March 2015.
___________________JOURNAL OF PUBLIC HEALTH---OXFORD UNIV PRESS
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