1. Department of Anatomic Pathology; Tohoku University Graduate School of Medicine
2. Division of Pathology; Tohoku University Hospital
3. Division of Pathology; Faculty of Medicine; Tohoku Medical and Pharmaceutical University; Sendai
4. Department of Pathology; Toranomon Hospital; Tokyo
5. Department of Thoracic Surgery; Tohoku University Hospital
6. Research Division for Development of Anti-Infective Agents; Institute of Development, Aging and Cancer; Tohoku University; Sendai Japan