Difficult portal vein access in transjugular intrahepatic portosystemic shunt placement.
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D002404:Catheterization / Q000295:instrumentation; D004867:Equipment Design; D006503:Hepatic Veins; D006801:Humans; D009339:Needles; D011169:Portal Vein; D011170:Portasystemic Shunt, Surgical / Q000295:instrumentation / Q000379:methods*; D011677:Punctures / Q000295:instrumentation