title: The difficult colonoscopy.
authors: St Paul's Hospital, University of British Columbia, Vancouver.
authors: Todd N
authors: TN
authors: Witte
authors: Robert
authors: R
authors: Enns
mesh_terms: D000367:Age Factors; D015992:Body Mass Index; D002983:Clinical Competence; D020685:Colonoscopes; D003113:Colonoscopy / Q000379:methods; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D004867:Equipment Design; D005471:Fluoroscopy / Q000379:methods; D006801:Humans; D012307:Risk Factors; D012737:Sex Factors; D013997:Time Factors
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