No abstract available
MeSH terms
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Animals
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Animals, Wild
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Bird Diseases / epidemiology*
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Bird Diseases / parasitology
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Bird Diseases / pathology
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Crop, Avian / parasitology
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Crop, Avian / pathology*
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England / epidemiology
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Esophagus / parasitology
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Esophagus / pathology*
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Finches / parasitology*
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Necrosis
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Protozoan Infections / epidemiology
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Protozoan Infections / pathology
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Protozoan Infections, Animal*
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Scotland / epidemiology