1. Department of Transfusion Medicine Huashan Hospital Fudan University Shanghai 200040 P. R. China
2. Department of Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases Shanghai Institute of Traumatology and Orthopaedics Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200240 P. R. China
3. John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
4. Wellman Center for Photomedicine Massachusetts General Hospital Department of Dermatology Harvard Medical School, 50 Blossom Street Boston MA 02114 USA