1. State Key Laboratory of Bioreactor Engineering, Department of Bioengineering East China University of Science and Technology Shanghai 200237 China
2. Wallace H Coulter Department of Biomedical Engineering & Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology & Emory School of Medicine Atlanta GA 30332 USA
3. State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China
4. Department of Orthopedics Shanghai No.6 People's hospital Shanghai 200233 China
5. Department of Emergency Medicine, Michigan Center for Integrative Research in Critical Care, Biointerfaces Institute University of Michigan Ann Arbor MI 48109 USA