1. Craniofacial Research Laboratory, Section of Plastic Surgery, Department of Surgery, University of Michigan, Ann Arbor, Michigan.
2. Department of Otolaryngology-Head and Neck Surgery, University of Michigan, Ann Arbor, Michigan.
3. Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, Michigan.
4. Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.