1. Department of General Surgery, Nanjing Drum Tower Hospital, Gulou District, Nanjing 210008, Jiangsu Province, China
2. Department of General Surgery, Drum Tower Clinical Medical College of Nanjing Medical University, Gulou District, Nanjing 210008, Jiangsu Province, China
3. Department of Pathology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Traditional Chinese Medicine, Qinhuai District, Nanjing 210009, Jiangsu Province, China