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| ==References== | | ==References== |
| + | Morris J, Dobson J (2001) Small Animal Oncology , Gastrointestinal Tract, pp 125-127 |
| + | Withrow S. J, Vail D. M (2007) Withrow and MacEwen's Small Animal Clinical Oncology, fourth edition. Chapter 21, Cancer of the Gastrointestinal Tract, pp 477-478 |