1. Unit of Orthodontics, Hamad Dental Center, Hamad Medical Corporation, Doha, Qatar.
2. Unit of Prosthodontics, Hamad Dental Center, Hamad Medical Corporation, Doha, Qatar.
3. Al Wakra Dental Hospital, Hamad Medical Corporation, Doha, Qatar.
4. Unit of Endodontics, Hamad Dental Center, Hamad Medical Corporation, Doha, Qatar.
5. Department of Surgery, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
6. College of Medicine, Qatar University, Doha, Qatar.
7. Weill Cornell Medicine—Qatar, Doha, Qatar.
8. School of Health and Education, University of Skovde, Skovde, Sweden.