1. Department of Oral and Maxillofacial Surgery; Plastic Surgery; University Medical Center of the Johannes Gutenberg-University Mainz; Mainz Germany
2. Department of Mathematics and Technology; RheinAhrCampus Remagen; University of Applied Sciences Koblenz; Remagen Germany
3. Institute of Medical Biometry; Epidemiology and Informatics; Johannes Gutenberg-University; Mainz Germany