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Tags: 1989, 80 and over, Adolescent, Adult, Aged, Annals of emergency medicine, Central Nervous System Diseases/etiology, Emergency Service, Female, Fontanarosa P B, Headache/etiology, Hospital, Humans, Male, Middle Aged, Nausea/etiology, Neurologic Examination, Retrospective Studies, Subarachnoid Hemorrhage/complications/*diagnosis, Tomography, Vomiting/etiology, X-Ray Computed
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