Affiliation: | a Department of Surgery, Chutung Veterans Hospital, Hsinchu county, Taipei, Taiwan b Division of Thoracic Surgery, Department of Surgery, Taipei-Veterans General Hospital, Taipei, Taiwan c School of Medicine, National Yang-Ming University, Taipei, Taiwan d Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan e Department of Pathology, Taipei-Veterans General Hospital, Taipei, Taiwan f School of Medicine, Taipei Medical University, Taipei, Taiwan |