Feasibility of a Novel Augmented 6-Minute Incremental Step Test oleh Jeroen Molinger, MS, Veraprapas Kittipibul, MD, J. Matthew Gray, MS, Vishal N. Rao, MD, MPH, Stratton Barth, BS, Ashley Swavely, MS, Brian Coyne, MEd, Aubrie Coburn, MS, Jan Bakker, MD, Paul E. Wischmeyer, MD, Cynthia L. Green, PhD, David MacLeod, MD, Manesh Patel, MD, Marat Fudim, MD, MHS