1. Assistant Professor, Department of Orthodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey.
2. Associate Professor, Department of Orthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
3. Professor and Program Director, Director of the Craniofacial Imaging Center, Department of Orthodontics, Case Western Reserve University, School of Dental Medicine, Cleveland, Ohio.