Question: I have a question about the benefits between using MDI vs. nebulized ventolin. I understand the direction is to use MDI as the preferred route. It certainly makes sense with anybody who is infectious but seems counterintuitive when you could be administering drug with oxygen at the same time as with the case of nebulization. There is also a perceived psychological benefit when patients can feel and see the mist. I have heard about studies that were done at Sick Kids to support MDI use. I was unable to locate them. Is there any other evidence you can suggest as to why MDI is the preferred route? Thank you so much for your time.