Yes. Thank you, Thierry. So first of all, on China. And of course, just to remind you one more time, Tycho, it's -- whatever I'm going to say right now it's clearly excluding the potential upside we might have on a coronavirus, but it also excludes a commensurate downside, which might be due to the general business trends that we at least currently see right now in China because, as you said, it's a little bit too early to commit to any conclusion. But given our models, on our experience out of the certain fourth quarter, it seems the good news is, clearly, the fourth quarter, we have seen an improvement compared to the third quarter in China. As you know, in the third quarter, we had, I think, a minus 26% kind of a growth rate in China. I think, in the fourth quarter, it was around minus 8% to 9% growth rate in China. So somewhat improvement. And as I said before, it's more or less all [indiscernible] really not much around life science in terms of negative impact. And we do also expect that we should expect here an improvement more or less quarter-by-quarter going back to what we believe is a new model, which is probably kind of a 10-plus percent growth rate by end of this year. Now we have to see how that falls in now with the overall China effects we see before. On margins, probably a little bit easier to answer right now. We also expect already that the first quarter we started quite strong in terms of margin improvement. I think we should have at least around the 200 basis margin improvement on adjusted operating margin compared to the first quarter last year. So it's probably 24, 25 percentage points for the first quarter. And also for the full year, I think we should see a nice margin improvement of at least around 75 basis points. It's clearly driven by a change in terms of R&D expenses. We talked about this change in our strategy around the next-generation sequence development. We're going to reinvest some of these savings, again, around about $30 million on a run rate, into sales and marketing activities, particularly around our launch activities. As you know, we have an important one coming out with digital PCR, where we believe we have an outstanding opportunity, and we just want to make white and clear that is supported as well.