1. The Air Force Medical Center, PLA, No. 30, Fuchenglu, Haidian District, Beijing 100142, P. R. China
2. Department of Physics, The City College of the City, University of New York, Institute of Ultrafast Spectroscopy and Lasers, NY 10031, USA
3. Physics Department and CSCU Center for Nanotechnology, Southern Connecticut State University, 501 Crescent Street, New Haven, CT 06515, USA
4. Beijing Cancer Hospital, No. 52, Fuchenglu, Haidian District, Beijing 100142, P. R. China
5. Institute of Physics, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
6. Department of Cardiology, Tianjin Medical, University General Hospital, Tianjin 300052, P. R. China
7. Beihang University, Xueyuan Road, No. 37, Haidian District, Beijing 100191, P. R. China