1. Department of Medicine, MedStar Union Memorial Hospital, Baltimore, USA
2. Department of Cardiology, Westchester Medical Center, Valhalla, USA
3. Department of Cardiology, Westchester Medical Center and Department of Medicine, New York Medical College, Valhalla, USA
4. Hypertrophic Cardiomyopathy Center, Cardiac Catheterization Laboratory, Department of Cardiology, Westchester Medical Center and Department of Medicine, New York Medical College, Valhalla, USA