1. Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
2. Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, MN, USA
3. Department of Preventive Medicine, School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
4. Division of Pulmonary & Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
5. Department of Research and Education, Guizhou Province People's Hospital, Guiyang, China
6. Mayo Clinic Cancer Center, Rochester, MN, USA