A pediatrician's view. Why do we have paranasal sinuses?
Altemeier
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Ward
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D005005:Ethmoid Sinus / Q000276:immunology / Q000502:physiology; D006801:Humans; D008443:Maxillary Sinus / Q000276:immunology / Q000502:physiology; D010256:Paranasal Sinuses / Q000276:immunology / Q000502:physiology*; D012141:Respiratory Tract Infections / Q000276:immunology*