1. Department of Surgery, College of Medicine Medical University of South Carolina Charleston South Carolina USA
2. Department of Surgery Alabama College of Osteopathic Medicine Dothan Alabama USA
3. Department of Surgery Duke University Medical Center Durham North Carolina USA
4. Division of Cardiovascular and Thoracic Surgery, Department of Surgery Duke University Medical Center Durham North Carolina USA
5. Section of Pediatric Cardiothoracic Surgery, Department of Surgery Medical University of South Carolina Charleston South Carolina USA