1 Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Tex.
2 Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Tex; Section of Adult Cardiac Surgery, Department of Cardiovascular Surgery, Texas Heart Institute, Houston, Tex; CHI St Luke's Health-Baylor St. Luke's Medical Center, Houston, Tex. Electronic address: ginger.etheridge@bcm.edu.