1 Private practice of orthodontics, Varese, Italy. info@matteoberetta.pro.
2 Private practice of orthodontics, Casale Monferrato, Italy.
3 Private practice of orthodontics, Casale Monferrato, Italy. Doctoral student and research fellow, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Italy.
4 Private practice of orthodontics, Bra, Italy.
5 Associate professor, Department of Surgery and Translational Medicine, Orthodontics, University of Florence, Italy.