1. Department of Oncology, Changzhou Traditional Chinese Medical Hospital, Changzhou, Jiangsu 213003, PR China
2. Department of Oncology, Jining Cancer Hospital, Jining, Shandong 272000, PR China
3. Department of Radio-Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu 215001, PR China
4. Department of Oncology, Binzhou People's Hospital, Binzhou, Shandong 256600, PR China
5. Department of General Practice, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu 215001, PR China