1. Stefan Listl, Prof. (apl.) Dr.rer.pol. Dr.med.dent. M.Sc., Health Economics, Department of Conservative Dentistry, Heidelberg University, Heidelberg, Germany
2. Clovis Mariano Faggion Jr, Priv.-Doz. Dr.med.dent., Department of Periodontology and Operative Dentistry, University of Münster, Münster, Germany
3. Hans Joerg Staehle, Prof. Dr.med.dent. Dr.med., Department of Conservative Dentistry, University of Heidelberg, Heidelberg, Germany