dr. aragon had outlined for us with mr. wayne enanoria a vision of the future related to population health. dr. aragon is driving the arches research unit towards looking at developing patient-centered data surveillance. a certain point when we have our systems, we're going to be able to know in san francisco who is at-risk for hiv and who may not have received treatment for hiv and systems involved in generating lists of client-centered data about prep utilization and prep needs. so at this point we're in planning phases at arches and it looks like they are getting ready for the next leap forward in population management. >> i wanted to ask dr. garcia, this seems to me a relatively new resource. would that be true versus, say five years ago? did we have such a unit? >> no, we did not and this is in the reorganization that our health officer has made within the unit. as you know we tb and hiv and stds and using the lean methodology for standard work and also to try to merge some of those data sets, this is where now they ar