1. Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
2. Center for Craniofacial Regeneration, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
3. Department of Oral and Craniofacial Sciences, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
4. McGowan Institute for Regenerative Medicine, Pittsburgh, Pennsylvania, USA.