1. Department Civil Engineering, University of Brescia, Brescia, Italy
2. Department Information Engineering, University of Brescia, Brescia, Italy
3. Department Medical Surgical Specialties, Radiological Sciences and Public Health, Dental School, University of Brescia, Brescia, Italy
4. Orthodontics, Division of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Sai Ying Pun, Hong Kong S.A.R.