1. Department of Pathology; Yokohama City University Graduate School of Medicine; Yokohama Japan
2. Department of Surgery; Yokohama City University Graduate School of Medicine; Yokohama Japan
3. Division of Pathology; Kanagawa Cardiovascular and Respiratory Centre; Yokohama Japan
4. Division of General Thoracic Surgery; Kanagawa Cardiovascular and Respiratory Centre; Yokohama Japan
5. Division of Respiratory Medicine; Kanagawa Cardiovascular and Respiratory Centre; Yokohama Japan
6. Division of Pathology; Japanese Red Cross Medical Centre Hospital; Tokyo Japan
7. Division of Radiology; Kanagawa Cardiovascular and Respiratory Centre; Yokohama Japan