1. Department of Thoracic Surgery, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
2. Department of Thoracic Surgery, Peking University Cancer Hospital (Inner Mongolia Campus) and Affiliated Cancer Hospital of Inner Mongolia Medical University, Hohhot 010020, Inner Mongolia Autonomous Region, China
3. Department of Radiation Oncology, Peking University Cancer Hospital (Inner Mongolia Campus) and Affiliated Cancer Hospital of Inner Mongolia Medical University, Hohhot 010020, Inner Mongolia Autonomous Region, China