And that will put more stress on the lungs. It will increase the pressure inside the lungs. And what that means is that feed, if that person will have more difficulty breathing as a result of the high pressure inside the lungs. Now, of course, this situation can be surgically fixed. Now, let's move on to the other type of abnormality that can arise as a result of the non closure of the forayman O'Valley. So, normally, under normal conditions, what happens is as a result of the reversal in pressure, because we reverse the pressure at birth and the left side increases in pressure, it becomes greater than the right side of the heart.