1. Clinic of Paediatric Neurology, Institute of Mother and Child, Kasprzaka 17A, 01-211 Warsaw, Poland
2. Department of Organization and Accounts, Institute of Mother and Child, Kasprzaka 17A, 01-211 Warsaw, Poland
3. Department of Medical Genetics, Institute of Mother and Child, Kasprzaka 17A, 01-211 Warsaw, Poland