1. Clinical Medical College of Jining Medical University, Jining, Shandong Province, China
2. Department of Radiation Oncology, The First Affiliated Hospital of Shandong First Medical University, Changsha, China
3. Shandong University of Traditional Chinese Medicine, Jining, Shandong Province, China
4. Cheeloo College of Medicine, Shandong University Jining, Shandong Province, China.