1. Department of Medical Technology, Beijing Pharmaceutical University of Staff and Workers, Beijing 100079, P. R. China
2. Beijing Key Laboratory of Environment & Viral Oncology, College of Chemistry and Life Science, Beijing University of Technology, Beijing 100124, P. R. China
3. Department of Dermatology, the First Medical Center of PLA General Hospital, Beijing 100853, P. R. China
4. Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100029, P. R. China
5. Department of Neurosurgery, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, P. R. China