1. State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics Center for Molecular Imaging and Translational Medicine School of Public Health Xiamen University Xiamen 361102 P. R. China
2. International Institutes of Medicine The Fourth Affiliated Hospital of Zhejiang University School of Medicine Yiwu, Zhejiang 322000 P. R. China
3. Departments of Diagnostic Radiology, and Surgery Clinical Imaging Research Centre Centre for Translational Medicine Nanomedicine Translational Research Program NUS Center for Nanomedicine Yong Loo Lin School of Medicine Departments of Chemical and Biomolecular Engineering and Biomedical Engineering Faculty of Engineering National University of Singapore Singapore 117597 Singapore