Affiliation: | 1. Department of Paediatrics, S?o Jo?o Hospital Centre, Porto, Portugal;2. Correspondence to:;3. Rita M. Jorge, Department of Paediatrics, S?o Jo?o Hospital Centre, Alameda Prof. Hernani Monteiro, 4200–319 Porto, Portugal;4. E‐mail:;5. Department of Genetics, Faculty of Medicine, Porto, Portugal;6. Paediatric Neurology Unit, Department of Paediatrics, S?o Jo?o Hospital Centre, Porto, Portugal |