1. Department of Thoracic Surgery, The Second People's Hospital of Lianyungang, Lianyungang, China.
2. Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.
3. Kangda College, Nanjing Medical University, Lianyungang, China.
4. Department of Oncology, The Second People's Hospital of Lianyungang, Lianyungang, China.