1. Dubowitz Neuromuscular Centre; UCL Institute of Child Health; London UK
2. Behavioural and Brain Sciences Unit; UCL Institute of Child Health; London UK
3. Department of Paediatric Neurology; Catholic University; Rome Italy
4. Department of Paediatric Neurology; NMRC; Universitair Ziekenhuis Gent; Gent Belgium
5. Paediatric Neurology Department; Hôpital Universitaire des Enfants Reine Fabiola; Universite Libre de Bruxelles; Brussels Belgium
6. Department of Neurosciences and Nemo Sud Clinical Centre; University of Messina; Messina Italy