[1] Houston Methodist DeBakey Heart and Vascular Center, Tex
[2] Division of Cardiac Surgery, University of Maryland School of Medicine, Md
[3] Department of Cardiac Surgery, University of Michigan, Ann Arbor, Mich
[4] Division of Cardiothoracic Surgery, University of Washington School of Medicine, Seattle, Wash
[5] Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Pa
[6] Division of Thoracic and Cardiovascular Surgery, University of Florida, Gainesville, Fla
[7] Division of Cardiovascular and Thoracic Surgery, Duke University School of Medicine, NC
[8] Department of Cardiovascular Surgery, University Heart Center Freiburg-Bad Krozingen, Freiburg
[9] Department of Cardiothoracic and Vascular Surgery, The University of Texas Health Science Center at Houston and Memorial Hermann Hospital, Tex
[10] The Society of Thoracic Surgeons, Ill
[11] Department of Cardiothoracic Surgery, Stanford University, School of Medicine, Calif
[12] Department of Cardiothoracic Surgery, University of Texas Health Science Center at San Antonio, Tex
[13] Division of Cardiac Surgery, Johns Hopkins University, Md
[14] Department of Cardiac Surgery, University of Bologna, Bologna
[15] Department of Cardiothoracic Surgery, University of Colorado School of Medicine, Colo
[16] Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Ohio
[17] Department of Cardiovascular Surgery, Mayo Clinic, Minn
