<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 And Safety Of Pan-Genotypic Sofosbuvir And Velpatasvir In Patients With Chronic Hepatitis C And Hiv Co-Infection On Dolutegravir Based Anti-Retroviral Therapy[/INST] Yes</s>