 Not just in the realm of heart attack, but the entire vascular system in general can be affected by COVID. It can be destabilized and the endothelium, which are the linings of the vascular, you know, our blood vessels can be weakened. So COVID, it's still something we're still figuring out. It's fairly new, but from the data we have, it can attack the cardiovascular system for a multitude of different ways.