是感染率和戴口罩的比例沒有關係
口罩沒和疫苗比
所有跟帖:
• 相關性質的對比,既沒有肯定,也沒有否定。 -虎嗅薔薇- ♀ (0 bytes) () 03/30/2020 postreply 11:57:22
• From the paper: -虎嗅薔薇- ♀ (377 bytes) () 03/30/2020 postreply 12:07:47
• 相關性質的對比,既沒有肯定,也沒有否定。 -虎嗅薔薇- ♀ (0 bytes) () 03/30/2020 postreply 11:57:22
• From the paper: -虎嗅薔薇- ♀ (377 bytes) () 03/30/2020 postreply 12:07:47
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