David Cordani
Analyst · Credit Suisse
It's David. So broadly speaking, If I put it in the context of the last couple of years, the provider contracting, our unit cost trend, we have not seen any surprises. So we've been able to deliver or beat our medical cost trend. And given that order of magnitude, 70% plus of that medical cost trend is underlying unit cost, and it's an important part of the equation. And over the last couple of years, the team has done a very good job there. As I -- as we look forward in terms of emerging trend, I put in the context of the buzzword of the day, is ACOs. But take that into the concert of more aligned contracting relationship. Thus far, we've seen very good traction in the areas we've targeted. We have innovative ACO positions in about 10 markets with over 1,000 physicians servicing in excess of 100,000 lives today. The key to those are aligning incentives, very importantly, using targeted information that help the physicians provide even a higher quality delivery for their patient or customer, and then supporting them with care extenders. By way of an emerging trend, we expect to see a lot more of that from an adoption standpoint, both going deeper with the existing relationships and broadening those relationships on a targeted basis. So within that, Charles, you're right, there is some risk sharing or we call it incentive alignment. But what powers that is the information enabling the physicians to get a more comprehensive view of their patients more rapidly and what we call care extenders, population-based health programs, lifestyle management programs, case management programs. That's an area we see much more adoption underway.
Charles Boorady - Crédit Suisse AG: And what's the appetite of your customer base to accept narrower networks or high-performance networks? And are they starting to purchase again disease management, wellness or other programs that saw slightly sluggish sales during the period of economic weakness over the last couple of years? I saw your specialty growth was very strong, and I'm wondering about wellness, disease management and high-performance network adoption as well.