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Submitted on: 31 August 2011.
Revised on: 10 November 2011.
Accepted on: 31 December 2011.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE
Submitted on: 20 January 2022.
Revised on: 11 May 2022.
Accepted on: 04 June 2022.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE
Submitted on: 23 January 2019.
Revised on: 21 February 2019.
Accepted on: 20 April 2019.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE
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Submitted on: 30 June 2005.
Revised on: 01 October 2005.
Accepted on: 24 November 2005.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE
Submitted on: 03 June 2009.
Revised on: 23 July 2009.
Accepted on: 17 August 2009.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE
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