1. Clinic for Conservative Dentistry and Periodontology; School of Dental Medicine; Christian Albrechts University; Kiel; Germany
2. Department of Oral and Maxillofacial Surgery; Christian Albrechts University; Kiel; Germany
3. Clinic for Heart- and Vascular-Surgery; Animal Experiment Division University Hospital Schleswig-Holstein Campus; Kiel; Germany
4. Clinic for Diagnostic Radiology; University Hospital Schleswig-Holstein Campus; Kiel; Germany
5. Oral Medicine and Periodontology Department; Faculty of Oral and Dental Medicine; Cairo University; Cairo; Egypt
6. Department of Clinical Pathology; Faculty of Medicine; Cairo University; Cairo; Egypt