1. Orthodontic Program, Arizona School of Dentistry & Oral Health A.T. Still University Mesa Arizona USA
2. Graduate School of Dentistry Kyung Hee University Seoul South Korea
3. Department of Orthodontics, Seoul St. Mary's Hospital, College of Medicine Catholic University of Korea Seoul South Korea
4. Department of Prosthodontics, Seoul St. Mary's Hospital, College of Medicine Catholic University of Korea Seoul South Korea
5. Division of Orthodontics, Department of Dentistry, St. Vincent's Hospital, College of Medicine The Catholic University of Korea Seoul South Korea