1. Department of Orthodontics, Orthodontic Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
2. Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
3. Health System Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
4. Dentist, Private Practice, Shiraz, Iran.
5. Department of Pediatric Dentistry, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
6. Orthodontist, Private Practice, Shiraz, Iran.