Evaluation of Left Ventricular Outflow Gradients During Staged Exercise Stress Echocardiography Helps Differentiate Pediatric Patients With Hypertrophic Cardiomyopathy From Athletes and Normal Subjects. - Gaitonde, Mansi; Jones, Shannon; McCracken, Courtney; Ferguson, Matthew E.; Michelfelder, Erik; Sachdeva, Ritu; Border, William (Pediatric Exercise Science, 2021)