1. Department of Oncology, The People's Hospital of Nanchang County, Nanchang, Jiangxi 330200, P.R. China
2. Department of Internal Medicine 2, Tumor Hospital of Jiangxi Province, Nanchang, Jiangxi 330006, P.R. China
3. Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
4. Department of Internal Medicine 6, Tumor Hospital of Jiangxi Province, Nanchang, Jiangxi 330006, P.R. China
5. Department of Respiratory Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China