1. Faculty of Medicine, Philipps-University of Marburg, and Department of Oral and Craniomaxillofacial Plastic Surgery, UKGM GmbH, University Hospital Marburg, Marburg, Germany
2. Faculty of Medicine, Goethe University, Frankfurt am Main, Germany
3. Department of Statistics, Chulalongkorn Business School, Chulalongkorn University, Bangkok, Thailand
4. Division of Oral and Maxillofacial Radiology, Department of Oral Diagnosis, Faculty of Dentistry, Naresuan University Phitsanulok, Phitsanulok, Thailand
5. Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
6. Department of Pediatric Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
7. Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
8. Department of Plastic, Reconstructive, Esthetic and Maxillofacial Surgery, Henri Mondor University Hospital, AP-HP, Faculty of Medicine, University Paris-Est Créteil Val de Marne (Paris XII), Créteil, France