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Submitted on: 02 June 2006.
Revised on: 25 June 2006.
Accepted on: 09 July 2006.
STATISTICAL METHODS IN MEDICAL RESEARCH
Submitted on: 14 September 2000.
Revised on: 13 October 2000.
Accepted on: 02 November 2000.
STATISTICAL METHODS IN MEDICAL RESEARCH
Submitted on: 05 September 2004.
Revised on: 20 September 2004.
Accepted on: 17 October 2004.
STATISTICAL METHODS IN MEDICAL RESEARCH
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