1. Dentistry Unit, Management Innovations, Diagnostics and Clinical Pathways, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
2. CIR—Dental School, Department of Surgical Sciences, University of Turin, 10126 Turin, Italy
3. Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, 00161 Rome, Italy
4. U.N.—E.U. International Research Project on Human Health, Oral Health Section, 1200 Genève, Switzerland