<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: Efficacy Of Total Enteral Nutrition Combined With Azathioprine In Maintaining Postoperative Remission In Crohn'S Disease: A Parallel, Randomized Controlled Study[/INST] Yes</s>