1. Endodontic Division, Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry
2. Iranian Center for Endodontic Research, Shahid Beheshti University of Medical Sciences
3. Department of Oral and Maxillofacial Pathology, Dental School, Shahid Beheshti University of Medical Sciences
4. Department of Endodontics, Dental School, Shahid Beheshti University of Medical Sciences
5. Department of Orthodontics, Dental School, Shahid Beheshti University of Medical Sciences