1. Department of Human Pathology; Juntendo University, School of Medicine; 2-1-1 Hongo Bunkyo-ku Tokyo 113-8421 Japan
2. Department of Diagnostic Pathology; Kanto Rosai Hospital; 1-1kizukisumiyoshi-cho Nakahara-ku, Kawasaki City Kanagawa 211-8510 Japan
3. Department of General Thoracic Surgery; Juntendo University; School of Medicine; 2-1-1 Hongo Bunkyo-ku Tokyo 113-8421 Japan