見圖:

Prevalence of adenomatous colonic polyps increases with age
Image
Adenomatous colonic polyps are found in about 25 percent of people by the age of 50; the prevalence continues to increase with increasing age.
Data from Williams, AR, Balasooriya, BA, Day, DW, Gut 1982; 123:835.

所有跟帖: 

多謝狼兄,受教。 -欲千北- 給 欲千北 發送悄悄話 欲千北 的博客首頁 (0 bytes) () 12/29/2016 postreply 17:43:23

請您先登陸,再發跟帖!