1. Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education The First Hospital of Jilin University Changchun 130061 P. R. China
2. Laboratory of Molecular Imaging and Nanomedicine National Institute of Biomedical Imaging and Bioengineering (NIBIB) National Institutes of Health (NIH) Bethesda MD 20892 USA
3. Department of Materials Science and Engineering Shenzhen Key Laboratory of Printed Organic Electronics Southern University of Science and Technology Shenzhen 518055 P. R. China
4. State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun 130012 P. R. China
5. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China
6. Intuitive Surgical Kifer Rd Sunnyvale CA 94086 USA
7. Molecular Imaging Program at Stanford (MIPS) Department of Radiology Stanford University School of Medicine Stanford CA 94305 USA