Response by Schrage et al to Letter Regarding Article, "Impella Support for Acute Myocardial Infarction Complicated by Cardiogenic Shock: A Matched-Pair IABP-SHOCK II Trial 30-Day Mortality Analysis". Issue 11 (10th September 2019) - Schrage, Benedikt; Schneider, Steffen; Zeymer, Uwe; Thiele, Holger; Westermann, Dirk