<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: Vitamin D And Calcium Supplementation Prevent Bone Loss In Vitamin D-Deficient Chronic Hepatitis B Patients Treated With Tenofovir Disoproxil Fumarate:A Randomized Controlled Study[/INST] Yes</s>