Gupta, Samir Colonoscopic withdrawal times and adenoma detection. [electronic resource] - The New England journal of medicine Mar 2007 - 1174; author reply 1174 p. digital Publication Type: Comment; Letter ISSN: 1533-4406 Standard No.: 10.1056/NEJMc070029 doi Subjects--Topical Terms: Adenoma--diagnosisClinical CompetenceColonic Neoplasms--diagnosisColonoscopy--economicsCost SavingsHumansTime Factors