1. Department of Thoracic Surgery, Institute of Development, Aging and Cancer; Tohoku University; Sendai Japan
2. Department of Vascular Biology, Institute of Development, Aging and Cancer; Tohoku University; Sendai Japan
3. Department of Thoracic Surgery; Japan Organization of Occupational Health and Safety Tohoku Rosai Hospital; Sendai Japan
4. Division of Epidemiology, Department of Public Health and Forensic Medicine; Tohoku University Graduate School of Medicine; Sendai Japan