Submitted on: 25 July 2002.
Revised on: 25 September 2002.
Accepted on: 24 October 2002.
___________________CEYLON MEDICAL JOURNAL---SRI LANKA MEDICAL ASSOC
Submitted on: 21 December 2011.
Revised on: 13 February 2012.
Accepted on: 28 March 2012.
___________________CEYLON MEDICAL JOURNAL---SRI LANKA MEDICAL ASSOC
Submitted on: 11 August 2002.
Revised on: 30 November 2002.
Accepted on: 27 January 2003.
___________________CEYLON MEDICAL JOURNAL---SRI LANKA MEDICAL ASSOC
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Submitted on: 28 April 2001.
Revised on: 13 June 2001.
Accepted on: 27 July 2001.
___________________CEYLON MEDICAL JOURNAL---SRI LANKA MEDICAL ASSOC
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Submitted on: 11 August 1999.
Revised on: 19 November 1999.
Accepted on: 25 December 1999.
___________________CEYLON MEDICAL JOURNAL---SRI LANKA MEDICAL ASSOC
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