1. Division of Plastic and Reconstructive Surgery, and Stanford University School of Medicine,Stanford, California, USA.
2. Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA.
3. School of Postgraduate Studies, Royal College of Surgeons in Ireland, Dublin, Ireland.
4. Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA.