1. Department of Ultrasound Peking University Third Hospital Beijing 100191 P. R. China
2. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology of China Beijing 100190 P. R. China
3. Beijing Center for Disease Control and Prevention Beijing 100013 P. R. China
4. Key Laboratory of Protein and Peptide Pharmaceuticals CAS Center for Excellence in Biomacromolecules Institute of Biophysics Chinese Academy of Sciences Beijing 100101 P. R. China
5. IGDB‐NCNST Joint Research Center Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 P. R. China