<s>[INST] Given an abstract text, please determine whether it contains any drug mentions. Provide a 'Yes' or 'No' answer based on the presence or absence of drugs. Abstract Text: Outcomes Of Direct Endoscopic Necrosectomy With Hydrogen Peroxide Lavage Using Lumen Apposing Metal Stents For Pancreatic Walled-Off Necrosis[/INST] Yes</s>