1. Department of Periodontology and Implant Dent; New York University College of Dentistry; New York NY USA
2. Avicenna Research Institute, Dental Research Center, Oral Surgery Division, Mashhad University of Medical Sciences; Mashhad Iran
3. Program director of advanced program in periodontology and Implant Dent, Department of Periodontology and Implant Dent, New York University College of Dentistry; New York NY USA
4. Program director, Department of Oral and Maxillofacial Radiology, New York University College of Dentistry; New York NY USA
5. Clinical associate professor, Department of Oral and Maxillofacial Radiology, New York University College of Dentistry; New York NY USA