Optimal Exercise Programs for Patients With Peripheral Artery Disease: A Scientific Statement From the American Heart Association. Issue 4 (22nd January 2019) - Treat-Jacobson, Diane; McDermott, Mary M.; Bronas, Ulf G.; Campia, Umberto; Collins, Tracie C.; Criqui, Michael H.; Gardner, Andrew W.; Hiatt, William R.; Regensteiner, Judith G.; Rich, Kathleen