1. GBA National Institute for Nanotechnology Innovation, Guangzhou, Guangdong 510700, 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. Department of Vascular and Endovascular Surgery, Chinese PLA General Hospital, Beijing 100853, P.R. China
4. Department of Ultrasound, Hospital of Renmin University of China, Beijing 100872, P.R. China
5. Department of Echocardiography, Peking University Third Hospital, Beijing 100191, P.R. China
6. PLA Rocket Force Characteristics Medical Center, Beijing 100888, P.R. China