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Submitted on: 11 October 2007.
Revised on: 31 January 2008.
Accepted on: 27 March 2008.
___________________AMERICAN JOURNAL OF VETERINARY RESEARCH
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Submitted on: 19 April 2004.
Revised on: 24 May 2004.
Accepted on: 14 July 2004.
___________________AMERICAN JOURNAL OF VETERINARY RESEARCH
Submitted on: 16 January 2006.
Revised on: 03 April 2006.
Accepted on: 16 April 2006.
___________________AMERICAN JOURNAL OF VETERINARY RESEARCH
Submitted on: 12 August 1998.
Revised on: 15 October 1998.
Accepted on: 28 October 1998.
___________________AMERICAN JOURNAL OF VETERINARY RESEARCH
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