1. University of Maryland School of Dentistry, Baltimore, MD, and Department of Orthodontics, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC.
2. School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC.
3. Department of Mathematical Sciences, University of Bath, Bath, England.
4. Facial Animation Laboratory, School of Dentistry
5. Division of Plastic Surgery, and Adjunct Faculty, Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC.