1. Stem Cells and Tissue Repair Group, Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore.
2. Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, Singapore.
3. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore.
4. Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore.
5. Tissue Engineering Program, Department of Orthopedic Surgery, National University of Singapore, Singapore, Singapore.
6. Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.