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Subjects
- Colonoscopy -- adverse effects2
- Humans2
- Intestinal Perforation -- etiology[remove]2
- Risk Factors2
- United States2
- Colon -- injuries1
- Colonic Diseases -- diagnosis1
- Colonic Neoplasms -- diagnosis1
- Colonoscopy -- methods1
- Evidence-Based Medicine1
- Incidence1
- Intestinal Perforation -- epidemiology1
- Intestinal Perforation -- prevention & control1
- Pennsylvania1