Severity of respiratory features in each group.
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(PGrouping 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.*Severe pneumonia: abnormal shadows on chest radiographs and required mechanical ventilation.†Moderate/mild pneumonia: abnormal shadows on chest radiographs but did not require mechanical ventilation.‡Upper respiratory tract infection: absence of pneumonia.
创建时间：
2015-12-02
