1. Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
2. Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
3. Department of Internal Medicine, Section of Pulmonary and Critical Care Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
4. Department of Internal Medicine, Section of Cardiology, Penn State College of Medicine, Hershey, Pennsylvania
5. Department of Internal Medicine, Section of Cardiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
6. Department of Internal Medicine, Section on Pulmonary and Critical Care Medicine, University of Miami, Miami, Florida
7. Department of Anesthesiology, Novant and Piedmont Triad Anesthesia, Winston-Salem, North Carolina
8. Department of Neurology, Wake Forest School of Medicine, Winston-Salem, North Carolina