1. Department of Cardio-Thoracic Surgery, People’s Hospital of Deyang City, Deyang, Sichuan 618000, China
2. Department of Pulmonary and Critical Care Medicine, Shandong Public Health Clinical Center, Jinan, Shangdong 250013, China
3. Department of Radiotherapy, The Second Hospital of Jilin University, Jilin, Changchun 130000, China
4. Department of Respiration, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, No. 105, Jiefang Road, Lixia District, Jinan, Shandong Province 250013, China