1. Eye Clinic, Neuromuscular and Sense Organs Department, Careggi University Hospital, 50134 Florence, Italy
2. Department of Neurosciences, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, 50121 Florence, Italy
3. Azienda USL Toscana Nordovest, 56121 Pisa, Italy
4. SODc Diagnostica Genetica, Careggi University Hospital, 50134 Florence, Italy