Next question is from the David Risinger, Morgan Stanley. Your line now is open.
David R. Risinger - Morgan Stanley & Co. LLC: Thanks very much. I have two questions. First, with respect to payers, they are starting to talk about trying to contract for individual indications. And obviously, one area they might be thinking about is alternatives to HUMIRA for certain indications from new drugs that have potentially better profiles than HUMIRA in certain indications. Could you just comment on your perspective on contracting for individual indications in autoimmune disease? And then, second, Rick, I was hoping that you could provide a little bit more detail on the sort of timing and specifics surrounding the patent litigation steps? So, obviously, you're not going to comment on individual patents or individual patent strategies. But as I understand it, there will be immediately after Amgen gets approval of its biosimilar, immediately after that occurs, there will be a wave of patent litigation that kicks in and I was just hoping that you could provide a little bit more perspective on how investors should think about that, and what they should be expecting? Thank you.
Richard A. Gonzalez - Chairman & Chief Executive Officer: Yeah. So, this is Rick. So, let me start with the payer question that you had. Indication-based pricing, I think, first evolved primarily in the oncology space. And it was driven, I think, by certain efforts to say, you'll have an oncology agent that has very strong efficacy in a certain disease, and might have significantly lower efficacy in another disease, and why would I pay the same for this strong efficacy as I would for relatively modest efficacy? I think that was how the concept originally evolved. As we look at HUMIRA, and we look across all of the major indications at least, with every single indication, there's obviously some variation between the competitive profiles. But I'd say, in general, HUMIRA tends to perform across those broad set of indications in the top tier. And so that is how we view it. So, indication-based pricing wouldn't be something that we think is very applicable for this specific asset in this particular class. And we haven't seen it take off much prior to this, and we'll have to see how it plays out over time. There are a lot, it may sound to you like it's a fairly innocent issue around timing and the steps and what should play out, but I would tell you, it's not that from a litigation standpoint. And so I'm just going to need to take the same position I did before. We're not in a position to be able to give you a lot more color. Certainly, we've made it clear what our position is going to be. And I think that will become clearer as the steps play out. But I can't give you a whole lot of color on the timing or what the alternatives would be.