患儿3个月,咳嗽半个月,呈鸡鸣样咳,其姐5岁,同时咳嗽,听诊双肺呼吸音相,无明显干湿性喝音,胸片肺纹理增粗、模糊,血常规WBC 26X109/L, L67%,考虑为
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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