1. Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, China.
2. Cheeloo College of Medicine, Shandong University, Jinan, China.
3. Central Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan, China.
4. Department of Radiation Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.