疫苗在曆史上的作用我專門看書研究過，心中有數，具體怎麽樣我以前已經說過了，不再重複。

來源: 醫者意也於 2016-02-12 19:36:25 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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