1. Division of Plastic and Reconstructive Surgery, Department of Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada.
2. Research Institute Program in Physiology and Experimental Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada.
3. Division of Plastic and Reconstructive Surgery, University of Toronto, Toronto, Ontario, Canada.
4. Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada.