1 Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong UniversityJinan, Shandong Province, P. R. China; Department of Clinical Oncology, Taian Central HospitalTaian, Shandong Province, P. R. China.
2 Department of Neurosurgery, Taian Central Hospital Taian, Shandong Province, P. R. China.
3 Department of Clinical Oncology, Taian Central Hospital Taian, Shandong Province, P. R. China.
4 Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong UniversityJinan, Shandong Province, P. R. China; University of Jinan, School of Medicine and Life Sciences, Shandong Academy of Medical SciencesJinan, Shandong Province, P. R. China.
5 Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong University Jinan, Shandong Province, P. R. China.
6 Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong UniversityJinan, Shandong Province, P. R. China; Shandong Academy of Medical SciencesJinan, Shandong Province, P. R. China.