Yes, sure. Thanks, Patrick. So, I mean, we've learned a lot about cash flow over the last year here. And we've made some progress, not where we wanted it to go to, but definitely some uptick. The 2020 operating assumption is that working capital turns are basically static, unlike the last couple of years, where we've actually been reducing our working capital turns, and it's been a headwind. So, there's internal processes around things like billing and invoice accuracy and timeliness and collection efforts, et cetera. But really, when you look at receivables, it's in three or four different business models. And we expect some of that to somewhat plateau in 2020. We've seen terms changing, particularly in China and some of the emerging markets that are much more developed now. Informatics, we've started to sell subscriptions on a three-year basis, a couple years ago. So, we should expect some more cash from that. Cannabis, we've been leaning into a little bit here. So, the fundamental -- embedded in this 75% to 80% is basically static from an efficiency standpoint, which will be great. Hopefully, there's upside. And certainly over the next couple years, we'll drive that. The second thing I'd say is around capital expenditures. So, capital expenditures downtick I think about 20% this year. We didn't repeat some of the investments in genomics, and we've been kind of monitoring EUROIMMUN. I would say over the next couple of years, there are two remaining areas that require capital expansion. That's EUROIMMUN in China; we're building out a facility there. And then, our Tulip business in India is growing extremely well. And we’ve got to increase some of the facilities space there. But after that, I don't think we see a lot of capital expansion. So, we've kind of reduced it a little bit here. It'll be static for a little while. And then, hopefully, that downticks over time.