1. Department of Cranio-Maxillofacial Surgery, Maastricht University Medical Center, Maastricht, The Netherlands.
2. Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Aachen, Germany.
3. Department of Neurosurgery, Maastricht University Medical Center, Maastricht, The Netherlands.
4. Division of Genetic Epidemiology, Innsbruck Medical University, Innsbruck, Austria.