1 Division of Cardiothoracic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana. Electronic address: dpceppa@iupui.edu.
2 Division of Cardiothoracic Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana.
3 The Society of Thoracic Surgeons, Chicago, Illinois.
4 Division of Health Care Policy and Research, Mayo Clinic, Rochester, Minnesota.
5 St Joseph Mercy Hospital, St Louis, Missouri.
6 Department of Cardiothoracic Surgery, University of Chicago, Chicago, Illinois.
7 Division of Cardiothoracic Surgery, St Louis University Health Sciences Center, St Louis, Missouri.
8 Division of Thoracic Surgery, Mayo Clinic, Rochester, Minnesota.