1. Division of Pediatric Dentistry, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
2. Hospital Dentistry, Clinical Orthodontics and Periodontal Medicine Research Group, Institut de Recerca Sant Joan de Déu (IRSJD), Barcelona, Spain
3. Department of Odontostomatology, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
4. Department of Orthopedic Surgery and Traumatology, Mount Meru Regional Hospital, Arusha, Tanzania