Efficacy Analysis Of Self-Expandable Metal Stents In Advanced Malignant Biliary Obstruction According To The Level Of The Stent: Above Versus Across The Ampulla Of Vater
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: Identify all the mentioned drugs in the given text. Text may or may not contain drug. If they contain more than 1 drug, use ";" as delimiter and join them. ### Input: Efficacy Analysis Of Self-Expandable Metal Stents In Advanced Malignant Biliary Obstruction According To The Level Of The Stent: Above Versus Across The Ampulla Of Vater ### Output: 