1. Center for Health Science, Section of Orthodontics, UCLA School of Dentistry, Los Angeles, CA, USA
2. Private Practice, Houston, TX, USA
3. Department of Orthodontics, Rey Juan Carlos University, Madrid, Spain
4. Department of Orthodontics, State University of New York, Buffalo, NY, USA
5. Orthodontic and Craniofacial Development Research, Forsyth Institute, Cambridge, MA, USA
6. Department of Orthodontics, Ajou University, School of Medicine, Suwon, Korea