TY - BOOK AU - Khalid, Nauman AU - Shlofmitz, Evan AU - Waksman, Ron TI - Letter by Khalid et al Regarding Article, "The Evolving Landscape of Impella Use in the United States Among Patients Undergoing Percutaneous Coronary Intervention With Mechanical Circulatory Support" SN - 0009-7322 PY - 2020/// KW - *Heart-Assist Devices KW - *Percutaneous Coronary Intervention KW - Heart-Assist Devices/ae [Adverse Effects] KW - Humans KW - Percutaneous Coronary Intervention/ae [Adverse Effects] KW - United States/ep [Epidemiology] KW - MedStar Heart & Vascular Institute KW - Letter UR - https://dx.doi.org/10.1161/CIRCULATIONAHA.120.045634 ER -