1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2. College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
3. Department of Medical Imaging, First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi 030001, China
4. Department of Pediatrics, Peking Union Medical College Hospital, Beijing 100730, China
5. CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Chinese Academy of Sciences, Beijing 100190, China