Yeah, Bob. That's absolutely correct in terms of the second half of your statement. We will be lapping in the fourth quarter a reasonable charge that should be non-recurring. With respect to the balance of the year, we have not built in – as we said last quarter with the full-year guidance, we've built in nothing with respect to the med device tax. So, if it doesn't come to fruition, then that's consistent with the guidance we provided. And, clearly, if it does, then that's going to be a headwind we're going to have to manage through. Tariffs are just such a dynamic topic that we've done our best to offset the tariffs that are in effect now. But that, again, is changing. So, I'd say if that would completely cease any further dialog around tariffs, then what's been announced today, we've more or less been able to manage through that. What I would say is there are still a lot of other SG&A initiatives that Mike talked about that do have a longer runway and, therefore, they aren't necessarily all – the cadence isn't equally distributed amongst four quarters. I'd really highlight some of the supply chain initiatives that have a long runway and won't necessarily bear fruit for – it could be two, three years, but we are incurring costs to begin to plan for those this year. And as well, the sales force restructuring that we've discussed as well is kind of in-flight through the course of the year. So, that's not something you can just kind of ratably divide it by four and say it's going to be equal in terms of the cost or the benefits. So, look, you're right in that the fourth quarter does have a tailwind this year and the fact that this is non-recurrence of a charge, but we just – we feel, I guess, I'd say, cautiously optimistic for the year based on the first quarter, but feels too early at this stage, given all these variables that are out there to call anything up at this early stage.