In such cases, this routine is called.

在这种情况下，需要调用这个例程。

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Like routine human flu, cases of swine flu can range from mild to severe.

同普通的人流感一样，猪流感病情也有从轻微到严重之分。

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Group B: Routine operation in 48 cases as control.

组48例采用常规手术方式作对照。

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Group B: Routine operation in 48 cases as control.

组48例采用常规手术方式作对照。

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