1 Department of Surgery, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND. Electronic address: [email protected].
2 Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan.
3 Department of General Thoracic Surgery, Baylor College of Medicine, Houston, Tex.
4 Department of Surgery, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND; Department of Cardiovascular and Thoracic Surgery, Altru Hospital, Grand Forks, ND.