1. Division of General Thoracic Surgery, Department of Surgery, Tokai University School of Medicine, Isehara, Japan
2. Department of General Thoracic Surgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan
3. Department of General Thoracic Surgery, Keio University School of Medicine, Tokyo, Japan
4. Department of General Thoracic Surgery, Saitama City Hospital
5. Department of Chemistry, Nara Medical University, Kashihara, Nara, Japan