1. Department of General Surgery, The Second Affiliated Hospital of Nanchang University , Jiangxi, Nanchang, Jiangxi, P. R. China
2. The Second Clinical Medical College of Nanchang University, The Second Affiliated Hospital of Nanchang University , Jiangxi, Nanchang, Jiangxi, P. R. China
3. Queen Mary School, Jiangxi Medical College of Nanchang University , Nanchang, Jiangxi, P. R. China