[1] University Hospital RWTH Aachen,Department of Oral & Maxillofacial Surgery, School of Medicine
[2] Laboratory for Dermatopathology and Pathology Hamburg-Niendorf,Department of Oral and Cranio
[3] Department of Dermatology and Histopathology,Maxillofacial Surgery
[4] Fachklinik Hornheide,undefined
[5] Klinikum Osnabrueck GmbH,undefined