Mark C. Capone - Myriad Genetics, Inc.
Management
Yeah. Thanks, Bill. So we were very pleased with the volume in the quarter. Of course, it was impacted like all products from weather conditions in the first quarter. But it was interesting to note in weeks where we had clean weeks without weather impacts, we saw record weeks, we saw record month in March. So the volumes remained very strong. From a sequential standpoint, we did see a shift in mix. And as you know, for the private payer segment, we're not fully reimbursed in that segment. And so, as you see a shift more towards private payer mix, you're going to ultimately at least in the short-term see a reduction in ASP as a result of that. And that's really the phenomenon we saw in the quarter. But the fundamentals of the business and the growth that we're seeing in GeneSight, we're very pleased with, we think the event this week and having full disclosure now on the data is only going to put us in a stronger position to have continual very productive conversations. As Bryan mentioned, we also saw record additions of physician testers in the quarter as well, which, as you're well aware, is the bellwether for continued growth in the future. So, overall, really strong volume shift in mix led to a little lower ASP, but that's to be expected.
William R. Quirk - Piper Jaffray & Co.: Okay. And then, just thinking about some of the early payer decisions around GeneSight, I guess, Mark, can you help kind of frame the discussions that are going on in the background? I guess what I'm getting at is have the payers that you're speaking with and/or made a decision already seen the data that you presented yesterday, presumably under a CDA? I'm just trying to figure out kind of how impactful the actual data presentation will be compared to the discussions? And associated with that, eventual publication as well, if they've already had a chance to review everything? Thank you.