题目内容
根据胎龄，早产儿的定义是
2021-11-27
A.胎龄<37周的新生儿
B.胎龄>37周至<40周的新生儿
C.胎龄>37周至<42周的新生儿
D.胎龄<42周的新生儿
E.胎龄<28周的新生儿
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