1. Department of Orthodontics, School of Dentistry, Oral Pathology and Maxillo-Facial Surgery, Leuven, Belgium.
2. Centre of Human Genetics, UZ & KU Leuven, Belgium, and Paediatric Dentistry Department, Paris 7 University, Paris, France.
3. Paediatric Stomatology, R. Debré Hospital, AP-HP, France.
4. Department of Maxillo-Facial Surgery, Leuven, Belgium.
5. Center of Human Genetics, Leuven, Belgium.
6. Department of Orthodontics, School of Dentistry, Oral Pathology and Maxillofacial Surgery, KULeuven, Leuven, Belgium.