1. Department of Orthopaedics, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, Guangdong Province, P. R. China
2. MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, P. R. China
3. Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, P. R. China
4. Guangzhou Key Lab of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou 510631, P. R. China