Affiliation: | 1. McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA;2. Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15219, USA;3. Joint Department of Biomedical Engineering at University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA;4. Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC 27695, USA;5. Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, USA |