1. Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Ultrasound, Peking University Cancer Hospital & Institute, Beijing 100142, China
2. State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
3. Division of Image-guided Therapy, Department of Radiology, Hadassah Hebrew University Medical Center, Jerusalem, Israel