1. Department of Pathology; The first affiliated Hospital; Third Military Medical University; Chongqing 400037 China
2. Department of Thoracic Surgery; Xinqiao Hospital; Third Military Medical University; Chongqing 400037 China
3. Department of Cardiothoracic Surgery; First People's Hospital of Zunyi; Guizhou 563000 China
4. Department of General Surgery; Xinqiao Hospital; The Third Military Medical University; Chongqing 400037 China