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A concurrent outbreak of psittacine beak and feather disease virus, and avian polyomavirus infection in budgerigars (Melopsittacus undulatus). |
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| Authors: | A Ramis K S Latimer X Gibert R Campagnoli |
| Institution: | Department of Pathology, School of Veterinary Medicine, Universitat Autbonoma de Barcelona, Bellaterra, Barcelona, Spain. |
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