<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: Pharmacoepidemiological Research On N-Nitrosodimethylamine Contaminated Ranitidine Use And Long-Term Cancer Risk: A Population-Based Longitudinal Cohort Study[/INST] Yes</s>