László Seper1
, Richárd Schwab* 2
, Sirichai Kiattavorncharoen* 1,3
, Andre Büchter* 1,4
, Ágnes Bánkfalvi* 5,6
, Ulrich Joos* 1
, József Piffkó* 1
and Birgit Kruse-Loesler* 1 
1Department of Cranio-Maxillofacial Surgery, University of Muenster, Waldeyerstr. 30, 48149 Muenster, Germany
2Cooperative Research Center, Semmelweis University, POB 131, 1367 Budapest, Hungary
3Department of Oral and Maxillo-Facial Surgery, Mahidol University, 6 Yothe Rd.Rajthevee, 10400 Bangkok, Thailand
4Group practice Engelke, Büchter, Immenkamp, Hohenzollernring 10, 48145 Muenster, Germany
5Gerhard-Domagk-Institute of Pathology, University of Muenster, Domagkstraße 17, 48149 Muenster, Germany
6Departments of Pathology and Neuropathology, University of Duisburg-Essen Medical School, Hufelandstraße 55, 45122 Essen, Germany