Anton Sculean 1, Frank Schwarz 2, Mohammad Berakdar 1, Pe ́ter Windisch 3, Nicole B. Arweiler 4 and Georg E. Romanos 5
1 Department of Conservative Dentistry and Periodontology, Johannes Gutenberg- University, Mainz, Germany;
2 Department of Oral Surgery, Heinrich Heine-University, Du ̈sseldorf, Germany;
3 Department of Periodontology, Semelweis University Budapest, Hungary;
4 Department of Conservative Dentistry and Periodontology, Albert-Ludwigs-University, Freiburg, Germany;
5 Department of Oral Surgery and Implantology, University of Frankfurt, Germany
J Clin Periodontol 2004;