1 Stem Cell and Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, Morgantown, WV, United States.
2 Department of Orthopedic Surgery, Center for Tissue Engineering and Regenerative Medicine, Louisiana State University Health Sciences Center, Shreveport, LA, United States.
3 Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States.
4 Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, United States.
5 Faculty of Dentistry, National University of Singapore, Singapore, Singapore.
6 Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.