Submitted on: 07 April 1999.
Revised on: 17 May 1999.
Accepted on: 30 May 1999.
___________________JOURNAL OF PUBLIC HEALTH POLICY
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Submitted on: 29 December 1999.
Revised on: 19 April 2000.
Accepted on: 08 June 2000.
___________________JOURNAL OF PUBLIC HEALTH POLICY
Submitted on: 24 August 1999.
Revised on: 29 November 1999.
Accepted on: 14 December 1999.
___________________JOURNAL OF PUBLIC HEALTH POLICY
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