Biliary stricture is a common complication after end-to-end biliary anastomosis, especially after liver transplantation. This study is designed to investigate the safety and efficacy of magnetic recanalization technique, a newly clinical method, for treating biliary anastomotic stricture.
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Time duration of biliary recanalization, d (days)
Timeframe: From date of treatment (two magnets mated together) until the date of drop-off or the two magnets from the biliary tract or date of death from any cause, whichever came first, assessed up to 12 months