1. Department of Medical Research Center , State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing , P. R. China
2. Department of Radiation Oncology , College of Medicine, The Ohio State University , Columbus , OH , USA
3. Center for Cancer Metabolism, Comprehensive Cancer Center, The Ohio State University , Columbus , OH , USA
4. Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University , Beijing , P. R. China