1. Lung Cancer Center, West China Hospital Sichuan University Chengdu China
2. School of Dentistry, Department of Pathology University of California Los Angeles California USA
3. Department of Biostatistics, MD Anderson Cancer Center University of Texas Houston Texas USA
4. Department of Thoracic Surgery, Henan Cancer Hospital University of Zhengzhou Zhengzhou China
5. Department of Thoracic Surgery, Jiangsu Cancer Hospital Nanjing Medical University Nanjing China
6. Laboratory of Lung Development and Disease West China Second University Hospital, Sichuan University Chengdu China
7. Department of Cancer Epidemiology Cancer Hospital/Institute, Chinese Academy of Medical Sciences Beijing China