1. Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, USA
2. Division of Oral & Maxillofacial Radiology, College of Dentistry, The Ohio State University, Columbus, OH, USA
3. Division of Oral and Maxillofacial Surgery and Anesthesiology, College of Dentistry, The Ohio State University, Columbus, OH, USA
4. Division of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Columbus, OH, USA
5. Department of Orthodontics, Graduate School of Clinical Dentistry, Ewha Womans University, Seoul, Korea