1. Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, People's Republic of China
2. Department of Radiation Oncology, Anhui Chest Hospital, Hefei, Anhui, 230022, People's Republic of China
3. Department of Radiation Oncology, Anhui Second People's Hospital, Hefei, Anhui, 230012, People's Republic of China
4. Department of Cardiothoracic Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, People's Republic of China