[1] Radboud University Medical Center,Department of Oral and Maxillofacial Surgery
[2] Charité - Universitätsmedizin Berlin,Department of Oral and Maxillofacial Surgery
[3] corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin,Department of Hand, Plastic and Reconstructive Surgery
[4] BG Trauma Center Ludwigshafen,Department of Oral and Maxillofacial Surgery
[5] University of Heidelberg,Department of Dentistry, Faculty of Medicine and Dentistry
[6] University Medical Centre,undefined
[7] Johannes Gutenberg University Mainz,undefined
[8] Danube Private University,undefined