1. Centro AIRett Ricerca e Innovazione (CARI), Research and Innovation AIRett Center, Verona, Italy
2. Movement Analysis and Robotics Laboratory (MARLab), Rome, Italy
3. Division of Child Neurology and Psychiatry, G. Martino Hospital, University of Messina, Messina, Italy
4. Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
5. Department of Physical Therapy, Faculty of Health Sciences, Ariel University, Ariel, Israel
6. Israeli Rett Center, National Evaluation Team, Chaim Sheba Medical Center, Ramat Gan, Israel