1. Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
2. Department of Thoracic Surgery, San Giovanni Battista Hospital, University of Torino, Torino, Italy
3. Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
4. Statistics Center, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
5. Department of Thoracic Surgery, McMaster University Hospital, Hamilton, ON, Canada
6. Division of General Thoracic Surgery, Mayo Clinic Rochester, MN, USA