1. Department of Thoracic Surgery, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu 225009, P.R. China
2. Institute of Combining Traditional Chinese and Western Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225009, P.R. China
3. Department of Pathology, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu 225009, P.R. China