1. Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
2. Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
3. Institute of Medicine, Suranaree University of Technology, Nakhon Ratchasima, Thailand
4. McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA
5. Ri.MED Foundation, Palermo, Italy