Affiliation: | 1.Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria; (M.B.S.); (L.P.);2.Department of Dentistry, Federal University of Santa Catarina, Florianopolis 88040-900, Brazil;3.Department of Periodontology, School of Dental Medicine, University of Bern, 3010 Bern, Switzerland |