1. Private Practice; Rome Italy
2. Centre for Business Decision-making; Faculty of Organizational Sciences; University of Belgrade; Belgrade Serbia
3. Department of Oral Surgery; University of Valencia; Valencia Spain
4. Institute for Biological Research “Sinisa Stankovic”; University of Belgrade; Belgrade Serbia
5. Centre for Osteoarticular and Dental Tissue Engineering; INSERM U791; Faculty of Dental Surgery; University of Nantes; Nantes France