1. Department of Pathology Yokohama City University Graduate School of Medicine YokohamaJapan
2. Department of General Thoracic Surgery Yokohama City University Graduate School of Medicine YokohamaJapan
3. Department of Biostatics Yokohama City University Graduate School of Medicine YokohamaJapan
4. Division of General Thoracic Surgery Kanagawa Prefectural Cardiovascular and Respiratory Center Hospital KanagawaJapan
5. Division of Pathology Kanagawa Prefectural Cardiovascular and Respiratory Center Hospital KanagawaJapan
6. Department of Pathology Jichi Medical University Tochigi Japan