1. Assistant professor, Department of Oral and Maxillofacial Radiology, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2. Associate professor, Department of Periodontics, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3. Assistant professor, Department of Periodontics, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4. Assistant professor, Department of Oral and Maxillofacial Radiology, Dental School, Mazandaran University of Medical Sciences, Sari, Iran
5. Assistant professor, Department of Oral and Maxillofacial Radiology, Dental School, Alborz University of Medical Sciences, Karaj, Iran