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2. Epiglottic entrapment and follicular pharyngitis: diagnosis and treatment;Boles,1975
3. Epiglottic entrapment by arytenoepiglottic folds in the Horse;Boles;J Am Vet Med Assoc,1978
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5. Endoscopes and endoscopy of the equine upper respiratory tract. Mu FCVE;Lane,1995