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| ==References== | | ==References== |
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| + | *Hall, E.J, Simpson, J.W. and Thomas, D. (2005) '''BSAVA Manual of Canine and Feline Gastroenterology (1st Edition)''' ''BSAVA'' |
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| + | *Nelson, R.W. and Couto, C.G. (2009) '''Small Animal Internal Medicine (Fourth Edition)''' ''Mosby Elsevier'' |