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Primary and functional primary patency of arteriovenous fistula (AVF). (A) AVF survival after the placement of the fistula in 219 patients. (B) Functional AVF survival after the initial fistula cannulation among the 180 patients in whom hemodialysis could be initiated. Success rates are shown at 1 year and at the end of follow-up (mean, 3.6 years).
