Do you agree with the conclusion of this research considering its method? ( Conclusion: screening colonoscopies have large potential for prevention and early detection of colorectal cancer, with low risk of overdiagnosis.)

http://www.ncbi.nlm.nih.gov/pubmed/25218160

http://www.dkfz.de/en/presse/pressemitteilungen/2014/dkfz-pm-14-55-Effective-and-safe-Evaluation-of-the-first-ten-years-of-colonoscopy-in-cancer-screening.php