1. Department of Pediatric Dentistry/Oral Medicine; Dental School; University of Brescia; Brescia; Italy
2. Department of Transplantation; Pediatric Clinic; AO Spedali Civili di Brescia; Brescia; Italy
3. IRCCS “Ca Granda - Ospedale Maggiore”; University of Milano; Milano; Italy
4. Department of Surgery, Microsurgery and Medical Sciences; Dental School; University of Sassari; Sassari; Italy