| http://www.w3.org/ns/prov#value | - Q???????????? Yes.??? David Bryden, Infectious Disease Society.??? Just a question on HIV/AIDS prevention.??? I am wondering if -- you mentioned treatment are prevention which I think is a really important thing for all of us to get our heads around and the important results that came out from Croy (ph) about that.??? And I am wondering if you have looked at how to quantify the impact of your treatm
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