Response by Lopes et al to Letter Regarding Article, "Initial Invasive Versus Conservative Management of Stable Ischemic Heart Disease Patients With a History of Heart Failure or Left Ventricular Dysfunction: Insights From the ISCHEMIA Trial". Issue 20 (18th May 2021) - Lopes, Renato D.; Alexander, Karen P.; Hochman, Judith S.; Maron, David J.