最后结尾可以写讨论~ 或者参考文献下面是一篇文章的参考文献:仅供参考,请勿抄袭。 [1]Bowles CJ,Leicester R,Romaya C,et A prospective study of colonoscopy practice in the UK today:are we adequately prepared for national colorectal cancer screening tomorrow[J]Gut,2010,53(2):277-[2]梁寒,郝希山,王晓娜,等40岁以下青年人直肠癌患者的预后因素分析IJI中华胃肠外科杂志,2010,7(1):38一[3]孙振球医学统计学[M]北京:人民卫生出版社,2009,2(1)19一 [4]Mathew J,Shankar P,Aldean IMAudit on flexible sigmoidoscopy for rectal bleeding in a district general:are we overloading the resources?[J]Postgrad Med J,2007,80(939):38-[5]Canard JM,Debette-Gratien M,Dumas R,et al,A prospective national study on colonoscopy and sigmoidoscopy in 2000 in France[J]Gastroenterol Clin Biol,2008,29(1):17- 医学论文问题 1452128212