一个年富力强的医生一年做300例和一个老朽一年做20例同样的手术相比哪个更可靠好像不用分析吧？

来源: Funny6518 于 2019-02-25 09:04:18 [旧帖] [给我悄悄话] 本文已被阅读：次

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