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| ==References== | | ==References== |
| + | * Merck & Co (2008) '''The Merck Veterinary Manual (Eighth Edition)''' ''Merial'' |
| + | * Nelson, R.W. and Couto, C.G. (2009) '''Small Animal Internal Medicine (Fourth Edition)''' ''Mosby Elsevier'' |
| + | * Tilley, L.P. and Smith, F.W.K.(2004)'''The 5-minute Veterinary Consult (Third edition)''' ''Lippincott, Williams & Wilkins'' |
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