1. 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
2. Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine National University of Singapore Singapore 117597 Singapore
3. Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine National University of Singapore Singapore 117597 Singapore
4. School of Pharmaceutical Sciences Nanjing Tech University 30 South Puzhu Road Nanjing 211816 China
5. Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) Nanjing University of Posts & Telecommunications Nanjing 210023 China
6. Fujian Cross Strait Institute of Flexible Electronics (Future Technologies) Fujian Normal University Fuzhou 350117 China