1. Department of Rehabilitation Sciences; Vrije Universiteit Brussel; Belgium
2. Leiden University Medical Center; Leiden The Netherlands
3. Department of Gynaecology, Prenatal Ultrasonography, Academic Hospital; Katholieke Universiteit Leuven; Leuven Belgium
4. Department of Child Neurology, Academic Children's Hospital; Vrije Universiteit Brussel; Belgium
5. Radboud Institute for Health Sciences; Radboud University Medical Center; Nijmegen The Netherlands