1. Division of Cardiothoracic Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
2. Department of Cardiovascular Surgery, Hôpital Européen Georges Pompidou, Université Sorbonne Paris Cité, Paris, France
3. Division of Cardiothoracic Surgery, Washington University in St Louis, St Louis, MO, USA
4. Division of Cardiothoracic Surgery, Brown University, Providence, RI, USA
5. Department of Cardiothoracic Surgery, Stanford University, Stanford, CA, USA
6. Division of Thoracic Surgery, Massachusetts General Hospital, Boston, MA, USA