1. Department of Pathology, School of Medicine; Tohoku University; Sendai Japan
2. CHUGAI Pharmaceutical Co.; Gotemba Japan
3. Department of Respiratory Medicine; Tohoku Pharmaceutical University Hospital; Sendai Japan
4. Department of Pathology; Miyagi Cancer Centre; Natori Japan
5. Department of Respiratory Medicine; Miyagi Cancer Centre; Sendai Japan
6. Department of Thoracic Surgery; Tohoku University Graduate School of Medicine; Sendai Japan