Submitted on: 06 December 2017.
Revised on: 08 January 2018.
Accepted on: 05 March 2018.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE
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Submitted on: 04 April 2022.
Revised on: 19 May 2022.
Accepted on: 04 July 2022.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE
Submitted on: 20 February 1999.
Revised on: 25 April 1999.
Accepted on: 20 June 1999.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE
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Submitted on: 08 February 1998.
Revised on: 09 May 1998.
Accepted on: 14 June 1998.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE
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Submitted on: 19 June 2010.
Revised on: 01 August 2010.
Accepted on: 08 September 2010.
___________________ANNALS ACADEMY OF MEDICINE SINGAPORE