Discrepancy in the Diagnosis of Heart Failure With Preserved Ejection Fraction Between Supine Versus Upright Exercise Hemodynamic Testing. - Fudim M; Kittipibul V; Swavely A; Gray A; Mikitka J; Young E; Dobbin O; Radzom M; Fee J; Molinger J; Patterson B; Battista Perego G; et al. (Circulation. Heart failure, 2024)