1. Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.
2. Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
3. Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA.
4. Department of Surgery, Division of Plastic and Reconstructive Surgery, Northwestern University, Chicago, IL 60611, USA.
5. Department of Orthopaedic Surgery, Northwestern University, Chicago, IL 60611, USA.
6. Department of Veterinary Pathobiology, University of Illinois, Urbana, IL 61822, USA.
7. Department of Otolaryngology—Head and Neck Surgery, Northwestern University, Chicago, IL 60611, USA.
8. Department of Cell and Molecular Biology, Northwestern University, Chicago, IL 60611, USA.
9. Department of Surgery, Division of Organ Transplantation, Northwestern University, Chicago, IL 60611, USA.