Yes. It's actually driven by the stimulants themselves and how nasty they can be, of course, Otherwise, why would the physician be considering to switch or add Qelbree, he won't switch to Qelbree, right? That means there is a problem. There is something that the patient is struggling with. And the stimulant on its own is not really doing what it's supposed to do, meaning address the symptoms that the patient is going through. So instead of completely taking the patient off the stimulant, which has a lot of issues with it when you do that, withdrawals, a lot of patients feel withdrawal and suffer from all kind of symptoms when you cut them off completely from the amphetamines or methylphenidates what physicians try to do is taper off the dose of the stimulant over time and then as time goes on, increase the dose of Qelbree. And therefore, the use of Qelbree in combination with the stimulants perhaps will continue to be the case. Physicians like to do that because they don't want to take patients off completely very quickly, very suddenly off the stimulants. And they like to titrate up on Qelbree and add it, and therefore, the reason why we see a very good healthy level of use as a combination. It continues to be around the 40% of adult prescriptions to be combination use. In pediatric, it's less so. It's about 20%, we estimate of the pediatric prescriptions are combination. So that dynamic continues to be the case. And then eventually, what happens with the patient as they're off the stimulant, actually, a lot of them, interestingly, they find out that they don't have to have any more 2 prescriptions or 2 stimulants that they used to take because a lot of them used to take a controlled release, let's say, amphetamine. And then later in the day, they need to supplement with an immediate release because even the extended release doesn't cover and give them the full coverage for the full day. With Qelbree, what they're finding out is that with 1 pill, that's all what they have to do is take Qelbree once a day, and it truly gives them a full 24-hour coverage. So Qelbree has a lot of advantages clearly by giving them the full day coverage without having to take 2 different products. And of course, a very different profile, continues to have good efficacy, and that's why people continue to use it. And actually, in adults, I mean, the satisfaction is pretty high among physicians who have tried Qelbree and continue to add more patients in their offices, adding more patients on Qelbree.