1. Department of Molecular Medicine; University of Pavia; Pavia Italy
2. Department of Pediatrics; Genetic Counselling Service; Regional Hospital of Bolzano; Bolzano Italy
3. Department of Medical Sciences; University of Torino; Torino Italy
4. S.C.D.U. Medical Genetics; Città della Salute e della Scienza; Torino Italy
5. Clinical Genetics Department; Vejle Hospital; Vejle Denmark
6. Clinical Genetics Department; Odense University Hospital; Odense Denmark
7. Department of Pediatrics; University of Turin; Turin Italy
8. Center for Genetic and Therapeutic Approaches; C. Mondino National Neurological Institute; Pavia Italy