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

來源: 於 2014-01-20 10:00:57 [舊帖] [給我悄悄話] 本文已被閱讀：次

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.