Submitted on: 10 June 2002.
Revised on: 03 August 2002.
Accepted on: 22 September 2002.
___________________Hong Kong Journal of Paediatrics
Submitted on: 14 January 2020.
Revised on: 12 February 2020.
Accepted on: 25 March 2020.
___________________Hong Kong Journal of Paediatrics
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Submitted on: 23 November 2004.
Revised on: 18 March 2005.
Accepted on: 03 May 2005.
___________________Hong Kong Journal of Paediatrics
Submitted on: 17 April 2024.
Revised on: 30 June 2024.
Accepted on: 18 July 2024.
___________________Hong Kong Journal of Paediatrics
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Submitted on: 23 February 2016.
Revised on: 03 May 2016.
Accepted on: 20 June 2016.
___________________Hong Kong Journal of Paediatrics