1. Department of Restorative Dentistry University of Illinois Chicago College of Dentistry Chicago Illinois USA
2. Department of Endodontics UT Health Houston School of Dentistry School of Dentistry Houston Texas USA
3. Department of Oral Biology School of Dental Medicine The University at Buffalo, State University of New York Buffalo New York USA
4. A.T. Still University's Missouri School of Dentistry & Oral Health Kirksville Missouri USA
5. Department of Orthodontics The University of Iowa, College of Dentistry Iowa City Iowa USA
6. Department of Orthodontics Tufts University School of Dental Medicine Boston Massachusetts USA
7. Department of Oral Diagnostic Sciences and Research Meharry Medical College School of Dentistry Nashville Tennessee USA