1. Private Practice in Rome; Rome; Italy
2. Istituto Stomatologico Toscano; Viareggio Italy
3. Oral Surgery; University of Valencia Medical and Dental School; Valencia Spain
4. ARDEC; (Ariminum Research & Dental Education Center) Rimini, Italy
5. Specialistic Clinic in Periodontics; Södra Älvsborg Hospital; Borås Sweden
6. Research and developments Unit (FOU); Borås Sweden