Inclusion Criteria:  Who were diagnosed with CP, confirmation of the diagnosis at the age of 5 years is required Who are born, treated for CP or living in Switzerland, and Who gave informed consent  Exclusion Criteria:  Pure muscular hypotonia Neurometabolic diseases (e.g. neuronal storage diseases, leukodystrophies) Other progressive neurological diseases (e.g. spinocerebellar ataxias, hereditary spastic paraplegia, Rett syndrome, epileptic encephalopathy)