1. Private practice , Saint Quentin , France
2. Private practice , Como , Italy
3. Department of Orthodontics, University of Alberta , 11405 87 Ave 5th floor T6G 1C9, Edmonton, Alberta , Canada
4. Radiology Area, University Rey Juan Carlos , Avenida de Atenas, s/n – 28922 Alcorcón, Madrid , Spain
5. Private Practice , Edmonton , Canada