1. Department of Surgery, University of Colorado School of Medicine, Aurora
2. Surgical Outcomes and Applied Research Program, University of Colorado School of Medicine, Aurora
3. Adult and Child Center for Health Outcomes Research and Delivery Science, University of Colorado School of Medicine, Aurora
4. Department of Biostatistics and Informatics, Colorado School of Public Health, Aurora
5. Division of Cardiology, Department of Medicine, University of Colorado School of Medicine, Aurora