跟帖 -If cancer-death% stays the same, but the average age gets ol

來源: 二哥 於 2014-01-20 10:00:57 [] [舊帖] [給我悄悄話] 閱讀數 : (164 bytes)

Cancer takes time to develop. If cancer-death% stays the same, but the average age gets older, we can say there is medical advance. It's very simple.

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