1. Department of Neonatology, Centro Hospitalar São João, Faculty of Medicine, University of Porto, Porto, Portugal
2. Department of Genetics, Centro Hospitalar São João, Faculty of Medicine, University of Porto, Porto, Portugal
3. Laboratory of Clinical Neurophysiology, Department of Neurology, Centro Hospitalar Vila Nova de Gaia e Espinho, Porto, Portugal
4. Division of Pediatric Neurology, Department of Pediatrics, Catholic University of Louvain, Brussels, Belgium
5. Department of Neonatology, Leiden University Medical Center, Leiden, The Netherlands