a
Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, China
b
Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, USA
E-mail: shawn.chen@nih.gov
;
Fax: +1 301-480-1613
;
Tel: +1 301-451-4246
c
Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, School of Pharmacy, Los Angeles, USA
E-mail: neamati@usc.edu
;
Fax: +1 323-442-1390
;
Tel: +1 323-442-2341
d
Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health (NIH), Bethesda, USA