1. School of Pharmaceutical Sciences Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases Henan Province Key Laboratory of Advanced Drug Preparation Technologies Ministry of Education Zhengzhou University Zhengzhou Henan 450001 China
2. Departments of Diagnostic Radiology Surgery Chemical and Biomolecular Engineering, and Biomedical Engineering Yong Loo Lin School of Medicine and Faculty of Engineering National University of Singapore Singapore 119074 Singapore
3. Clinical Imaging Research Centre Centre for Translational Medicine Yong Loo Lin School of Medicine National University of Singapore Singapore 117599 Singapore
4. Nanomedicine Translational Research Program NUS Center for Nanomedicine Yong Loo Lin School of Medicine National University of Singapore Singapore 117597 Singapore