 COPD is the fourth leading cause of death in the world, and it's the only leading cause of death that's actually increasing. In the diagnosing, screening, and monitoring of these diseases where the problem lies, and that's around the world, especially in developing countries. So we looked at, okay, how do people in the developed world actually solve this problem, and we found that that's their spirometry. Spirometers are medical devices that are used primarily by colonologists in hospitals right now, have the patient breathe into this device, inhale and exhale, and then you're able to trace out a curve of how that person's lungs are performing. And through that, you're able to diagnose if they have an obstruction or restriction in their lungs and actually figure out if this person has COPD, or if they have asthma, so different things like that. The big barrier is that it's really difficult to use, and it's a very high cause, somewhere between $1,000 and $3,000 for the average spirometer. So what we were able to figure out is using a microphone as the main sensor for this device, and a specific mechanical channel to make the air actually oscillate back and forth at any sort of moving parts. Currently, our prototypes that we've been using have been able to have comparable accuracy to those spirometers, which are $1,000, but our production cost is under $10 right now. All of the technical ideas came from us, and the direction of the project came from us. So right now, we're a company called Sparrow Labs, and we're looking to raise investment funding, continue our product development. We really want to see how far it can take it, and how many people we can reach, and really help. And I think our debut was a wonderful experience, and it's put into kind of have some extra motivation to do a good project. It's just upon how much success we've got, it's actually generated a lot of interest within Washington University, and it's really good to see so many people who are really interested in being part of this community also.