1. Department of Thoracic Surgery, Huadong Hospital Affiliated to FuDan University, Huadong, China
2. Department of Oncology of the Qingdao Municipal Hospital, Qingdao, China
3. Central Laboratory of the Affiliated Hospital of Medical College Qingdao University, Qingdao, China
4. Central Laboratory of Shanghai Chest Hospital Affiliated to Shanghai Jiaotong University, China