title: Use of the Portner-Koolpe biliary biopsy catheter to facilitate double-guide-wire placement.
mesh_terms: D000005:Abdomen; D000038:Abscess / Q000628:therapy*; D000328:Adult; D001659:Biliary Tract; D001706:Biopsy / Q000295:instrumentation; D002404:Catheterization / Q000295:instrumentation* / Q000379:methods; D004322:Drainage / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D008297:Male