患儿男,7岁;7天前到养鸡场参观,2天前高热,全身酸痛,咳嗽,X线发现双肺实质炎症及左侧胸腔少量积液,临床诊断考虑
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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