Hemodynamic responses to an exercise stress test in Parkinson's disease patients without orthostatic hypotension. - Roberson, Kirk B.; Signorile, Joseph F.; Singer, Carlos; Jacobs, Kevin A.; Eltoukhy, Moataz; Ruta, Nicolette; Mazzei, Nicolle; Buskard, Andrew N.L. (Applied Physiology, Nutrition & Metabolism, 2019)