1. Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, United Arab Emirates
2. Department of Oral Medicine and Oral Surgery, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan (On Leave)
3. Department of Prosthodontics, School of Dentistry, University of Jordan, Amman, Jordan
4. Department of Prosthodontics, The City of London School of Dentistry, (BPP) University, London, UK