prev next front |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |16 |17 |18 |19 |20 |21 |22 |23 |24 |25 |26 |27 |28 |review
除非我们拥有好的统计数据,否则我们无法得知癌症的发病率是否降低了,存活率是否提高了,和癌症的死亡率是否降低了.