Submitted on: 30 November 2006.
Revised on: 27 January 2007.
Accepted on: 06 March 2007.
___________________JOURNAL OF EPIDEMIOLOGY AND COMMUNITY HEALTH
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Submitted on: 30 April 2020.
Revised on: 31 July 2020.
Accepted on: 28 August 2020.
___________________JOURNAL OF EPIDEMIOLOGY AND COMMUNITY HEALTH
Submitted on: 27 August 2006.
Revised on: 17 September 2006.
Accepted on: 11 November 2006.
___________________JOURNAL OF EPIDEMIOLOGY AND COMMUNITY HEALTH
Submitted on: 24 June 2023.
Revised on: 16 September 2023.
Accepted on: 07 October 2023.
___________________JOURNAL OF EPIDEMIOLOGY AND COMMUNITY HEALTH
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Submitted on: 26 January 2000.
Revised on: 10 April 2000.
Accepted on: 03 May 2000.
___________________JOURNAL OF EPIDEMIOLOGY AND COMMUNITY HEALTH
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