1. Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, MD 20892, USA.
2. Laboratory of Computational Biology, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA.
3. Department of Otolaryngology, Stanford University, Stanford, CA 94305, USA.
4. State Key Laboratory of Precision Spectroscopy, School of Physics and Materials Science, East China Normal University, Shanghai 200062, P. R. China.
5. Department of Physics, School of Science, Tianjin University, Tianjin 300354, P. R. China.
6. Intuitive Surgical, Kifer Rd., Sunnyvale, CA 94086, USA.