1. Private Practice, Cagliari, Italy
2. Adjunct Professor, Department of Orthodontics,School of Dentistry, University of Cagliari, Cagliari, Italy
3. Orofacial Pain Clinic, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
4. Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia