1. Private Office Dr. Aslan İzmir Turkey
2. Department of Biomedical Surgical and Dental Sciences University of Milan Milan Italy
3. School of Dentistry Department of Periodontology Ege University İzmir Turkey
4. Accademia Toscana di Ricerca Odontostomatologica (ATRO) Florence Italy
5. European Research Group on Periodontology (ERGOPERIO) Bern Switzerland