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Patterns of endoscopy in the United States: analysis of data from the Centers for Medicare and Medicaid Services and the National Endoscopic Database
Keywords: CMS، مراکز خدمات Medicare و Medicaid; CMS, Centers for Medicare and Medicaid Services; CORI, Clinical Outcomes Research Initiative; ICD9, 9th revision of the International Classification of Diseases; SD, standard deviation; VA, Department of Veterans Affairs