7Zapka JG,Puleo E,Vickers-Lahti M. Health care system factors and colorectal cancer screening[J].American Journal of Preventive Medicine,2002,(05):28-35.
8Hardcastle JD,Chamberlain JO,Robinson MH. Randomised controlled trial of faecal-occult-blood screening for colorectal cancer[J].The Lancet,1996,(9040):1472-1477.
9CDC. Screening for colorectal cancer-United States,1997[EB/OL].http://www.cdc.gov/mmwr/preview/mmwrhtml/00056494.htm,2012.
10Stock C,Knudsen AB,Lansdorp-Vogelaar I. Colorectal cancer mortality prevented by use and attributable to nonuse of colonoscopy[J].Gastrointestinal Endoscopy,2011,(07):435.