7ZHAO P, DAI M, CHEN W, et al. Cancer trends in China[J]. Jpn J Clin, 2010, 40 :281- 285.
8MORSON B C. Evolution of cancer of the colon and rectum. Cancer, 1974, 34:845--849.
9BREUER-KATSCHINSKI B, NEMES K, MARR A, et al. Helicobacter pylori and the risk of colonic adeno- mas Colorectal Adenoma Study Group[J]. Digestion, 1999, 60:210--215.
10SELGRAD M, BORNSCHEIN J, KANDULSKI A, et al. Helicobacter pylori but not gastrin is associated with the development of colonic neoplasms[J]. Int J Cancer, 2014, 135:1127-1131.
