1. 1 Section of Cardiology, Baylor College of Medicine and Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
2. 2 Department of Adult Cardiology, Texas Heart Institute, Houston, Texas
3. 4 Section of Thoracic Surgery, Baylor College of Medicine and Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
4. 3 The University of Texas Health Science Center at Houston, Houston, Texas