1 Division of Thoracic Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA. Electronic address: Chitaru.kurihara@northwestern.edu.
2 Division of Thoracic Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
3 Division of Thoracic Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.