Clinical features of the study patients on admission.
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Grouping of patients was based on the number of days from symptom onset to oseltamivir administration: Group 1, ≤2 days; Group 2, 3–7 days; Group 3, 8–14 days; Group 4, >14 days.*Cochran-Armitage test.†Chest radiological findings.
创建时间：
2015-12-02
