Breakdown of participants demographics. Nineteen participants were non-invasive cardiologists including four 1st year fellows, two 2nd year fellows, seven 3rd year fellows, two 4th year fellows specializing in non-invasive cardiology and 4 cardiology attendings of non-invasive specializations. Fifteen participants were interventional cardiologists, including three 4th and 5th year pediatric or adult electrophysiology attendings, 4 cardiac catheterization attendings and 7 pediatric or adult electrophysiology attendings.