1. Jonesboro, iAR, United States
2. Department of Orthodontics, West Virginia University, Morgantown, WV, United States
3. White Oak, PA, United States
4. Division of Orthodontics, The Ohio State University, United States
5. Lake Oswego, OR, United States
6. Department of Restorative Dentistry, West Virginia University, United States
7. Department of Statistics, West Virginia University, United States